Comment 2 for bug 1167377

StacktraceTop:
 ?? ()
 g_object_notify_queue_add (pspec=0x7f7f3dce2400, object=<optimized out>, nqueue=<optimized out>) at /usr/include/glib-2.0/gobject/gobjectnotifyqueue.c:175
 gtk_container_child_notify (container=<optimized out>, child=child@entry=0x7f7f3e2d5ad0, child_property=child_property@entry=0x7f7f3b7df1f8 "pack-type") at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkcontainer.c:828
 gtk_widget_child_notify (widget=widget@entry=0x7f7f3e2d5ad0, child_property=child_property@entry=0x7f7f3b7df1f8 "pack-type") at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkwidget.c:3755
 gtk_box_pack (box=0x7f7f3e43ea00, child=0x7f7f3e2d5ad0, expand=1, fill=1, padding=0, pack_type=GTK_PACK_START) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkbox.c:1009