From 43f1b9d8ca9389fea51a5463b003af325b171349 Mon Sep 17 00:00:00 2001
From: Emmanuel Hansen <emmausssss@gmail.com>
Date: Tue, 17 Oct 2023 02:13:18 +0000
Subject: [PATCH] do not set borders if window state is maximized (#13228)

Co-authored-by: Max Katz <maxkatz6@outlook.com>
---
 src/Windows/Avalonia.Win32/WindowImpl.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Windows/Avalonia.Win32/WindowImpl.cs b/src/Windows/Avalonia.Win32/WindowImpl.cs
index acf9bd72d2..ffd9b08d4a 100644
--- a/src/Windows/Avalonia.Win32/WindowImpl.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.cs
@@ -1348,7 +1348,7 @@ namespace Avalonia.Win32
                 {
                     style &= ~fullDecorationFlags;
 
-                    if (newProperties.Decorations == SystemDecorations.BorderOnly)
+                    if (newProperties.Decorations == SystemDecorations.BorderOnly && WindowState != WindowState.Maximized)
                     {
                         style |= WindowStyles.WS_THICKFRAME | WindowStyles.WS_BORDER;
                     }