From 987bc200f089a7bec91c1169f423cb211439b831 Mon Sep 17 00:00:00 2001
From: Emmanuel Hansen <emmausssss@gmail.com>
Date: Tue, 13 Dec 2022 12:21:02 +0000
Subject: [PATCH] restore attribute to defaul when client area is restored

---
 src/Windows/Avalonia.Win32/WindowImpl.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Windows/Avalonia.Win32/WindowImpl.cs b/src/Windows/Avalonia.Win32/WindowImpl.cs
index ec4f9d8381..54635d11cd 100644
--- a/src/Windows/Avalonia.Win32/WindowImpl.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.cs
@@ -1051,6 +1051,12 @@ namespace Avalonia.Win32
                 _extendedMargins = new Thickness();
 
                 Resize(new Size(rcWindow.Width / RenderScaling, rcWindow.Height / RenderScaling), PlatformResizeReason.Layout);
+
+                unsafe
+                {
+                    int cornerPreference = (int)DwmWindowCornerPreference.DWMWCP_DEFAULT;
+                    DwmSetWindowAttribute(_hwnd, (int)DwmWindowAttribute.DWMWA_WINDOW_CORNER_PREFERENCE, &cornerPreference, sizeof(int));
+                }
             }
 
             if (!_isClientAreaExtended || (_extendChromeHints.HasAllFlags(ExtendClientAreaChromeHints.SystemChrome) &&