Add unloaded event, but didn't see impact tests pass before and after for #107

Author: michael-hawker

components/Extensions/src/Element/FrameworkElementExtensions.RelativeAncestor.cs

@@ -78,6 +78,19 @@ private static void FrameworkElement_Loaded(object sender, RoutedEventArgs e)
         if (sender is FrameworkElement fe)
         {
             SetAncestor(fe, fe.FindAscendant(GetAncestorType(fe))!);
+
+            fe.Unloaded -= FrameworkElement_Unloaded;
+            fe.Unloaded += FrameworkElement_Unloaded;
+        }
+    }
+
+    private static void FrameworkElement_Unloaded(object sender, RoutedEventArgs e)
+    {
+        if (sender is FrameworkElement fe)
+        {
+            fe.Unloaded -= FrameworkElement_Unloaded;
+
+            SetAncestor(fe, null!);
         }
     }
 }