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-rw-r--r--src/compositor/compositor-xrender.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/compositor/compositor-xrender.c b/src/compositor/compositor-xrender.c
index 805002e3..6294e9d7 100644
--- a/src/compositor/compositor-xrender.c
+++ b/src/compositor/compositor-xrender.c
@@ -1821,6 +1821,10 @@ add_win (MetaScreen *screen,
if (xwindow == info->output)
return;
+
+ /* If already added, ignore */
+ if (find_window_for_screen (screen, xwindow) != NULL)
+ return;
cw = g_new0 (MetaCompWindow, 1);
cw->screen = screen;