close #421

src/Shared/HandyControl_Shared/Themes/Styles/Base/PasswordBoxBaseStyle.xaml

@@ -296,7 +296,7 @@
         <Setter Property="Height" Value="Auto"/>
         <Setter Property="Padding" Value="{StaticResource DefaultInputPadding}"/>
         <Setter Property="hc:InfoElement.Symbol" Value="●"/>
-        <Setter Property="hc:InfoElement.ContentHeight" Value="{x:Static system:Double.PositiveInfinity}"/>
+        <Setter Property="hc:InfoElement.ContentHeight" Value="{x:Static system:Double.NaN}"/>
         <Setter Property="hc:PasswordBoxAttach.IsMonitoring" Value="True"/>
         <Setter Property="Focusable" Value="False"/>
         <Setter Property="Template" Value="{StaticResource PasswordBoxPlusTopTemplate}"/>