From e5a3820fbb05fe57de89353a2d58bf504b92e648 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Fri, 3 Jun 2022 15:40:01 +0100
Subject: [PATCH] whenever we become key... dispatch invalidateShadow

---
 native/Avalonia.Native/src/OSX/AvnWindow.mm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/native/Avalonia.Native/src/OSX/AvnWindow.mm b/native/Avalonia.Native/src/OSX/AvnWindow.mm
index f6dcd0cabf..ebd9f39d30 100644
--- a/native/Avalonia.Native/src/OSX/AvnWindow.mm
+++ b/native/Avalonia.Native/src/OSX/AvnWindow.mm
@@ -284,6 +284,14 @@
 - (void)windowDidBecomeKey:(NSNotification *_Nonnull)notification
 {
     _parent->BringToFront();
+    
+    dispatch_async(dispatch_get_main_queue(), ^{
+        @try {
+        [self invalidateShadow];
+        }
+        @finally{
+        }
+    });
 }
 
 - (void)windowDidMiniaturize:(NSNotification *_Nonnull)notification