From a12e563cd2d5d33a628f1e825dcbefd6423ca11e Mon Sep 17 00:00:00 2001
From: Benjamin Otte <otte@redhat.com>
Date: Sat, 22 Feb 2020 04:27:06 +0100
Subject: main: Don't synthesize crossing events when nothing changed

This was especially bad because it was confusing the event controllers
so much, they'd emit leave + enter events every time the mouse moved.
---
 gtk/gtkmain.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'gtk/gtkmain.c')

diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index 98bb83dd22..01e2f246cc 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -1321,6 +1321,9 @@ gtk_synthesize_crossing_events (GtkRoot         *toplevel,
   GtkWidget *prev;
   gboolean seen_ancestor;
 
+  if (old_target == new_target)
+    return;
+
   if (old_target && new_target)
     ancestor = gtk_widget_common_ancestor (old_target, new_target);
   else
-- 
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