From 638b5311bf4b5b73148c85a36bfcf9e4af418e31 Mon Sep 17 00:00:00 2001
From: NaBian <836904362@qq.com>
Date: Sat, 2 Nov 2019 02:00:57 +0800
Subject: [PATCH] fixed #191

---
 .../Controls/TabControl/TabItem.cs                   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs b/src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs
index 2e75b896..6555a9e1 100644
--- a/src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs
+++ b/src/Shared/HandyControl_Shared/Controls/TabControl/TabItem.cs
@@ -197,6 +197,18 @@ namespace HandyControl.Controls
             Focus();
         }
 
+        protected override void OnHeaderChanged(object oldHeader, object newHeader)
+        {
+            base.OnHeaderChanged(oldHeader, newHeader);
+
+            if (TabPanel != null)
+            {
+                TabPanel.ForceUpdate = true;
+                InvalidateMeasure();
+                TabPanel.ForceUpdate = true;
+            }
+        }
+
         internal void Close()
         {
             var argsClosing = new CancelRoutedEventArgs(ClosingEvent, this);