From c649b705799c4defa3b57f8f8dd09d825c45149b Mon Sep 17 00:00:00 2001
From: NaBian <836904362@qq.com>
Date: Sun, 26 Sep 2021 23:14:26 +0800
Subject: [PATCH] fix(control): minor modified popup position of ComboBox

---
 .../Themes/Styles/Base/ComboBoxBaseStyle.xaml | 392 ++++++++++--------
 .../HandyControl_Net_40/Themes/Theme.xaml     | 392 ++++++++++--------
 .../Themes/Styles/Base/ComboBoxBaseStyle.xaml | 392 ++++++++++--------
 .../HandyControl_Shared/Themes/Theme.xaml     | 392 ++++++++++--------
 4 files changed, 840 insertions(+), 728 deletions(-)

diff --git a/src/Net_40/HandyControl_Net_40/Themes/Styles/Base/ComboBoxBaseStyle.xaml b/src/Net_40/HandyControl_Net_40/Themes/Styles/Base/ComboBoxBaseStyle.xaml
index 99f2caa0..80477ee7 100644
--- a/src/Net_40/HandyControl_Net_40/Themes/Styles/Base/ComboBoxBaseStyle.xaml
+++ b/src/Net_40/HandyControl_Net_40/Themes/Styles/Base/ComboBoxBaseStyle.xaml
@@ -72,19 +72,21 @@
                 <ColumnDefinition/>
                 <ColumnDefinition Width="30"/>
             </Grid.ColumnDefinitions>
-            <Popup x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{Binding Background,RelativeSource={RelativeSource TemplatedParent}}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/>
             <Border Grid.Column="0" Margin="1,0">
@@ -137,19 +139,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
             <Border Grid.Row="1" Grid.Column="0" Margin="1,0">
@@ -200,19 +204,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
             <Border Grid.Column="1" Margin="1,0">
@@ -277,19 +283,21 @@
                 <ColumnDefinition/>
                 <ColumnDefinition Width="30"/>
             </Grid.ColumnDefinitions>
-            <Popup x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/>
             <Border Grid.Column="0" Margin="-1,1">
@@ -342,19 +350,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
             <Border Grid.Row="1" Grid.Column="0" x:Name="border" Margin="-1,1">
@@ -405,19 +415,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
             <Border Grid.Column="1" x:Name="border" Background="Transparent" Margin="-1,1">
@@ -578,19 +590,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -681,19 +695,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="1" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -787,19 +803,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -910,33 +928,37 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
-            <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" StaysOpen="False" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" StaysOpen="False" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -1050,19 +1072,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -1170,33 +1194,37 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
-            <Popup Grid.Column="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
diff --git a/src/Net_40/HandyControl_Net_40/Themes/Theme.xaml b/src/Net_40/HandyControl_Net_40/Themes/Theme.xaml
index 8e025daf..f4bc6bc0 100644
--- a/src/Net_40/HandyControl_Net_40/Themes/Theme.xaml
+++ b/src/Net_40/HandyControl_Net_40/Themes/Theme.xaml
@@ -4697,19 +4697,21 @@
 				<ColumnDefinition />
 				<ColumnDefinition Width="30" />
 			</Grid.ColumnDefinitions>
-			<Popup x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{Binding Background,RelativeSource={RelativeSource TemplatedParent}}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}" />
 			<Border Grid.Column="0" Margin="1,0">
@@ -4760,19 +4762,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
 			<Border Grid.Row="1" Grid.Column="0" Margin="1,0">
@@ -4821,19 +4825,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
 			<Border Grid.Column="1" Margin="1,0">
@@ -4894,19 +4900,21 @@
 				<ColumnDefinition />
 				<ColumnDefinition Width="30" />
 			</Grid.ColumnDefinitions>
-			<Popup x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}" />
 			<Border Grid.Column="0" Margin="-1,1">
@@ -4957,19 +4965,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
 			<Border Grid.Row="1" Grid.Column="0" x:Name="border" Margin="-1,1">
@@ -5018,19 +5028,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
 			<Border Grid.Column="1" x:Name="border" Background="Transparent" Margin="-1,1">
@@ -5183,19 +5195,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1" />
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5284,19 +5298,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="1" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" />
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5388,19 +5404,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1" />
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5510,33 +5528,37 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
-			<Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" StaysOpen="False" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" StaysOpen="False" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1" />
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5648,19 +5670,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" />
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5767,33 +5791,37 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
-			<Popup Grid.Column="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" />
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
diff --git a/src/Shared/HandyControl_Shared/Themes/Styles/Base/ComboBoxBaseStyle.xaml b/src/Shared/HandyControl_Shared/Themes/Styles/Base/ComboBoxBaseStyle.xaml
index d436de7d..f282f039 100644
--- a/src/Shared/HandyControl_Shared/Themes/Styles/Base/ComboBoxBaseStyle.xaml
+++ b/src/Shared/HandyControl_Shared/Themes/Styles/Base/ComboBoxBaseStyle.xaml
@@ -72,19 +72,21 @@
                 <ColumnDefinition/>
                 <ColumnDefinition Width="30"/>
             </Grid.ColumnDefinitions>
-            <Popup x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{Binding Background,RelativeSource={RelativeSource TemplatedParent}}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/>
             <Border Grid.Column="0" Margin="1,0">
@@ -144,19 +146,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
             <Border Grid.Row="1" Grid.Column="0" Margin="1,0">
@@ -214,19 +218,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
             <Border Grid.Column="1" Margin="1,0">
@@ -298,19 +304,21 @@
                 <ColumnDefinition/>
                 <ColumnDefinition Width="30"/>
             </Grid.ColumnDefinitions>
-            <Popup x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/>
             <Border Grid.Column="0" Margin="-1,1">
@@ -370,19 +378,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
             <Border Grid.Row="1" Grid.Column="0" x:Name="border" Margin="-1,1">
@@ -440,19 +450,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
             <Border Grid.Column="1" x:Name="border" Background="Transparent" Margin="-1,1">
@@ -620,19 +632,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -730,19 +744,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="1" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -843,19 +859,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -973,33 +991,37 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
-            <Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" StaysOpen="False" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" StaysOpen="False" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
             <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -1120,19 +1142,21 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
@@ -1247,33 +1271,37 @@
                 <ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
                 <TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
             </DockPanel>
-            <Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
-            <Popup Grid.Column="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-                <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-                    <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-                        <hc:ToggleBlock.CheckedContent>
-                            <ScrollViewer Margin="0,4">
-                                <StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
-                            </ScrollViewer>
-                        </hc:ToggleBlock.CheckedContent>
-                        <hc:ToggleBlock.UnCheckedContent>
-                            <hc:Empty/>
-                        </hc:ToggleBlock.UnCheckedContent>
-                    </hc:ToggleBlock>
-                </Border>
+            <Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+                <Decorator>
+                    <Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+                        <hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+                            <hc:ToggleBlock.CheckedContent>
+                                <ScrollViewer Margin="0,4">
+                                    <StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
+                                </ScrollViewer>
+                            </hc:ToggleBlock.CheckedContent>
+                            <hc:ToggleBlock.UnCheckedContent>
+                                <hc:Empty/>
+                            </hc:ToggleBlock.UnCheckedContent>
+                        </hc:ToggleBlock>
+                    </Border>
+                </Decorator>
             </Popup>
             <TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
             <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
diff --git a/src/Shared/HandyControl_Shared/Themes/Theme.xaml b/src/Shared/HandyControl_Shared/Themes/Theme.xaml
index eeaf5d04..4581ad16 100644
--- a/src/Shared/HandyControl_Shared/Themes/Theme.xaml
+++ b/src/Shared/HandyControl_Shared/Themes/Theme.xaml
@@ -4696,19 +4696,21 @@
 				<ColumnDefinition />
 				<ColumnDefinition Width="30" />
 			</Grid.ColumnDefinitions>
-			<Popup x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{Binding Background,RelativeSource={RelativeSource TemplatedParent}}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}" />
 			<Border Grid.Column="0" Margin="1,0">
@@ -4766,19 +4768,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
 			<Border Grid.Row="1" Grid.Column="0" Margin="1,0">
@@ -4834,19 +4838,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
 			<Border Grid.Column="1" Margin="1,0">
@@ -4914,19 +4920,21 @@
 				<ColumnDefinition />
 				<ColumnDefinition Width="30" />
 			</Grid.ColumnDefinitions>
-			<Popup x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}" />
 			<Border Grid.Column="0" Margin="-1,1">
@@ -4984,19 +4992,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
 			<Border Grid.Row="1" Grid.Column="0" x:Name="border" Margin="-1,1">
@@ -5052,19 +5062,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
 			<Border Grid.Column="1" x:Name="border" Background="Transparent" Margin="-1,1">
@@ -5224,19 +5236,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Row="1" Grid.Column="0" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1" />
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5332,19 +5346,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="1" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" />
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5443,19 +5459,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1" />
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5572,33 +5590,37 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Margin="1,0,1,0" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
-			<Popup Grid.Column="0" Grid.Row="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" StaysOpen="False" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="0" Grid.Row="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" StaysOpen="False" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1" />
 			<ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5717,19 +5739,21 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" />
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />
@@ -5843,33 +5867,37 @@
 				<ContentPresenter DockPanel.Dock="Right" TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(hc:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(hc:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}" />
 				<TextBlock hc:TextBlockAttach.AutoTooltip="True" TextWrapping="NoWrap" TextTrimming="CharacterEllipsis" Text="{Binding Path=(hc:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}" />
 			</DockPanel>
-			<Popup Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" IsOpen="{Binding IsDropDownOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
-			<Popup Grid.Column="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
-				<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
-					<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
-						<hc:ToggleBlock.CheckedContent>
-							<ScrollViewer Margin="0,4">
-								<StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
-							</ScrollViewer>
-						</hc:ToggleBlock.CheckedContent>
-						<hc:ToggleBlock.UnCheckedContent>
-							<hc:Empty />
-						</hc:ToggleBlock.UnCheckedContent>
-					</hc:ToggleBlock>
-				</Border>
+			<Popup HorizontalOffset="-8" Grid.Column="1" x:Name="PART_Popup_AutoComplete" PlacementTarget="{Binding ElementName=toggleButton}" AllowsTransparency="true" Grid.ColumnSpan="2" PopupAnimation="{StaticResource {x:Static SystemParameters.ComboBoxPopupAnimationKey}}" Placement="Bottom">
+				<Decorator>
+					<Border BorderThickness="0,1,0,0" Effect="{StaticResource EffectShadow2}" Margin="8,0,8,8" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" x:Name="dropDownBorder_AutoComplete" MinWidth="{Binding ActualWidth, ElementName=toggleButton}" MaxHeight="{TemplateBinding MaxDropDownHeight}" BorderBrush="{DynamicResource BorderBrush}" Background="{DynamicResource RegionBrush}">
+						<hc:ToggleBlock IsChecked="{Binding HasItems,RelativeSource={RelativeSource TemplatedParent},Mode=OneWay}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+							<hc:ToggleBlock.CheckedContent>
+								<ScrollViewer Margin="0,4">
+									<StackPanel Name="PART_AutoCompletePanel" KeyboardNavigation.DirectionalNavigation="Contained" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
+								</ScrollViewer>
+							</hc:ToggleBlock.CheckedContent>
+							<hc:ToggleBlock.UnCheckedContent>
+								<hc:Empty />
+							</hc:ToggleBlock.UnCheckedContent>
+						</hc:ToggleBlock>
+					</Border>
+				</Decorator>
 			</Popup>
 			<TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="9,0,0,4" Foreground="{DynamicResource DangerBrush}" />
 			<ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(hc:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}" />