From 5209995171e4f322ab6732d6b58589608bf97755 Mon Sep 17 00:00:00 2001
From: Olivier Fourdan <ofourdan@redhat.com>
Date: Wed, 3 May 2017 14:29:18 +0200
Subject: [PATCH] gtkwindow: Hide CSD title bar when undecorated

When switching from decorated to undecorated, the title bar should be
hidden as well.

https://bugzilla.gnome.org/show_bug.cgi?id=782117
---
 gtk/gtkwindow.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 55924bbf6c..b5d6498c32 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -6015,7 +6015,8 @@ update_csd_visibility (GtkWindow *window)
   if (priv->title_box == NULL)
     return FALSE;
 
-  visible = !priv->fullscreen &&
+  visible = priv->decorated &&
+            !priv->fullscreen &&
             !(priv->titlebar == priv->title_box &&
               priv->maximized &&
               priv->hide_titlebar_when_maximized);
-- 
2.30.2