From 7c4b4db6df7bccdccf002a91be19a1a6b39c851e Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Wed, 15 Mar 2023 18:04:22 +0100
Subject: [PATCH] Don't show titlebar when client area is extended.

Fixes first part of #10650.
---
 native/Avalonia.Native/src/OSX/WindowImpl.mm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/native/Avalonia.Native/src/OSX/WindowImpl.mm b/native/Avalonia.Native/src/OSX/WindowImpl.mm
index 104611eabc0..0f02be758cb 100644
--- a/native/Avalonia.Native/src/OSX/WindowImpl.mm
+++ b/native/Avalonia.Native/src/OSX/WindowImpl.mm
@@ -281,10 +281,13 @@
 
             case SystemDecorationsFull:
                 [Window setHasShadow:YES];
-                [Window setTitleVisibility:NSWindowTitleVisible];
-                [Window setTitlebarAppearsTransparent:NO];
                 [Window setTitle:_lastTitle];
 
+                if (!_isClientAreaExtended) {
+                    [Window setTitleVisibility:NSWindowTitleVisible];
+                    [Window setTitlebarAppearsTransparent:NO];
+                }
+
                 if (currentWindowState == Maximized) {
                     auto newFrame = [Window contentRectForFrameRect:[Window frame]].size;