From c302bf331cf853feaea0be4e10c30cd50a1e0323 Mon Sep 17 00:00:00 2001
From: Yuhang Zhao <2546789017@qq.com>
Date: Mon, 26 Oct 2020 18:12:51 +0800
Subject: [PATCH] Fix regression.

Signed-off-by: Yuhang Zhao <2546789017@qq.com>
---
 winnativeeventfilter.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/winnativeeventfilter.cpp b/winnativeeventfilter.cpp
index 767640e..6af9966 100644
--- a/winnativeeventfilter.cpp
+++ b/winnativeeventfilter.cpp
@@ -982,7 +982,9 @@ void UpdateFrameMarginsForWindow(const HWND handle)
         // the client area in WM_NCCALCSIZE so we won't see it due to
         // it's covered by the client area (in other words, it's still
         // there, we just can't see it).
-        margins.cyTopHeight = 1;
+        if (IsDwmCompositionEnabled() && !IsMaximized(handle) && !IsFullScreen(handle)) {
+            margins.cyTopHeight = 1;
+        }
         if (shouldUseNativeTitleBar() || dontExtendFrame()) {
             // If we are going to use the native title bar,
             // we should use the original window frame as well.