Index: gtk/gtkpaned.c
===================================================================
--- gtk/gtkpaned.c	(revision 19041)
+++ gtk/gtkpaned.c	(working copy)
@@ -1232,6 +1232,11 @@
   g_object_thaw_notify (object);
 
   gtk_widget_queue_resize (GTK_WIDGET (paned));
+
+#ifdef G_OS_WIN32
+  /* Hacky work-around for bug #144269 */
+  gtk_widget_queue_resize (paned->child2);
+#endif
 }
 
 /**
