--- xfce4-panel-4.14.3-orig/plugins/tasklist/tasklist-widget.c	2020-01-12 21:22:24.000000000 +0100
+++ xfce4-panel-4.14.3/plugins/tasklist/tasklist-widget.c	2022-04-14 04:26:14.994167672 +0200
@@ -2859,7 +2859,7 @@
 }
 
 
-
+#if 0 /* fix https://bugs.launchpad.net/ubuntu/+source/xfce4-panel/+bug/1968942 */
 static gboolean
 xfce_tasklist_button_size_allocate (GtkWidget         *widget,
                                     GdkRectangle      *allocation,
@@ -2871,7 +2871,7 @@
 
   return TRUE;
 }
-
+#endif
 
 
 #ifdef GDK_WINDOWING_X11
@@ -3444,8 +3444,10 @@
       G_CALLBACK (xfce_tasklist_button_button_release_event), child);
 
   /* monitor window changes */
+  /* fix https://bugs.launchpad.net/ubuntu/+source/xfce4-panel/+bug/1968942
   g_signal_connect (G_OBJECT (child->button), "size-allocate",
       G_CALLBACK (xfce_tasklist_button_size_allocate), child);
+  */
   g_signal_connect (G_OBJECT (window), "icon-changed",
       G_CALLBACK (xfce_tasklist_button_icon_changed), child);
   g_signal_connect (G_OBJECT (window), "name-changed",