Merge pull request #10065 from danielmayost/fixFDPopupBug

Make TopLevel can't be in MirrorTransform state

samples/ControlCatalog/MainView.xaml.cs

@@ -60,7 +60,7 @@ namespace ControlCatalog
             {
                 if (flowDirections.SelectedItem is FlowDirection flowDirection)
                 {
-                    this.FlowDirection = flowDirection;
+                    TopLevel.GetTopLevel(this).FlowDirection = flowDirection;
                 }
             };
 

src/Avalonia.Controls/TopLevel.cs

@@ -615,6 +615,13 @@ namespace Avalonia.Controls
                 KeyboardDevice.Instance?.SetFocusedElement(null, NavigationMethod.Unspecified, KeyModifiers.None);
         }
 
+        protected override bool BypassFlowDirectionPolicies => true;
+
+        public override void InvalidateMirrorTransform()
+        {
+            // Do nothing becuase TopLevel should't apply MirrorTransform on himself.
+        }
+
         ITextInputMethodImpl? ITextInputMethodRoot.InputMethod =>
             (PlatformImpl as ITopLevelImplWithTextInputMethod)?.TextInputMethod;
     }