diff --git a/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm b/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
index ea9ef3c9de..46f2ac0092 100644
--- a/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
+++ b/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
@@ -99,6 +99,8 @@ HRESULT WindowBaseImpl::Show(bool activate, bool isDialog) {
         }
 
         UpdateStyle();
+        
+        [Window invalidateShadow];
 
         if (ShouldTakeFocusOnShow() && activate) {
             [Window orderFront:Window];