From 102a5add164d5075364bb7f1cdc04e0fdf5c3625 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Sat, 19 Jan 2019 14:29:59 +0100
Subject: [PATCH] Invalidate the window when starting to drag it.

This ensures that the drag color shows up immediately.
---
 WindowServer/WSWindowManager.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/WindowServer/WSWindowManager.cpp b/WindowServer/WSWindowManager.cpp
index 0a769e6d2b..ab77906351 100644
--- a/WindowServer/WSWindowManager.cpp
+++ b/WindowServer/WSWindowManager.cpp
@@ -235,6 +235,7 @@ void WSWindowManager::handle_titlebar_mouse_event(WSWindow& window, MouseEvent&
         m_drag_window_origin = window.position();
         m_drag_start_rect = outerRectForWindow(window.rect());
         window.set_is_being_dragged(true);
+        invalidate(window);
         return;
     }
 }