From cd245bce0c93878917d36838be501fc938aea202 Mon Sep 17 00:00:00 2001
From: Bilal Elmoussaoui <belmouss@redhat.com>
Date: Thu, 8 Feb 2024 22:02:20 +0100
Subject: [PATCH] core/stack: Check client type before getting group

Closes https://gitlab.gnome.org/GNOME/mutter/-/issues/3283

Fixes: 43351b483 ("window: Move group to WindowX11")
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3572>
---
 src/core/stack.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/core/stack.c b/src/core/stack.c
index da8c91186..c48ff54d2 100644
--- a/src/core/stack.c
+++ b/src/core/stack.c
@@ -510,9 +510,10 @@ create_constraints (Constraint **constraints,
         {
           GSList *group_windows;
           GSList *tmp2;
-          MetaGroup *group;
+          MetaGroup *group = NULL;
 
-          group = meta_window_x11_get_group (w);
+          if (w->client_type == META_WINDOW_CLIENT_TYPE_X11)
+            group = meta_window_x11_get_group (w);
 
           if (group != NULL)
             group_windows = meta_group_list_windows (group);