From b7168d4ae29baee918090e1539900b76d79fc3c6 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Wed, 9 Dec 2020 21:37:35 +0000
Subject: [PATCH] fix win32 square shadow border appearing on fluent menus.

---
 src/Avalonia.Controls/ContextMenu.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/Avalonia.Controls/ContextMenu.cs b/src/Avalonia.Controls/ContextMenu.cs
index 31071768c9..5e17182f3e 100644
--- a/src/Avalonia.Controls/ContextMenu.cs
+++ b/src/Avalonia.Controls/ContextMenu.cs
@@ -233,6 +233,16 @@ namespace Avalonia.Controls
             }
         }
 
+        protected override void OnPropertyChanged<T>(AvaloniaPropertyChangedEventArgs<T> change)
+        {
+            base.OnPropertyChanged(change);
+
+            if (change.Property == WindowManagerAddShadowHintProperty && _popup != null)
+            {
+                _popup.WindowManagerAddShadowHint = change.NewValue.GetValueOrDefault<bool>();
+            }
+        }
+
         /// <summary>
         /// Opens the menu.
         /// </summary>