diff --git a/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm b/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
index 289694a9b8..3c4e1e314b 100644
--- a/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
+++ b/native/Avalonia.Native/src/OSX/WindowBaseImpl.mm
@@ -98,6 +98,8 @@ HRESULT WindowBaseImpl::Show(bool activate, bool isDialog) {
         }
 
         UpdateStyle();
+        
+        [Window invalidateShadow];
 
         if (ShouldTakeFocusOnShow() && activate) {
             [Window orderFront:Window];