From c837c1005165413ae49f0fde2f71d5f4ed52d223 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Wed, 22 Feb 2023 22:23:17 +0100
Subject: [PATCH] Don't call BringToFront on closed window.

---
 native/Avalonia.Native/src/OSX/AvnWindow.mm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/native/Avalonia.Native/src/OSX/AvnWindow.mm b/native/Avalonia.Native/src/OSX/AvnWindow.mm
index 80a0d3e66f..b1fb915e04 100644
--- a/native/Avalonia.Native/src/OSX/AvnWindow.mm
+++ b/native/Avalonia.Native/src/OSX/AvnWindow.mm
@@ -298,7 +298,8 @@
     dispatch_async(dispatch_get_main_queue(), ^{
         @try {
             [self invalidateShadow];
-            self->_parent->BringToFront();
+            if (self->_parent != nullptr)
+                self->_parent->BringToFront();
         }
         @finally{
         }