Comment 3 for bug 1351011

StacktraceTop:
 g_assertion_message (domain=domain@entry=0x7f2612f26e21 "mutter", file=file@entry=0x7f2612f2ac59 "core/window.c", line=line@entry=1778, func=func@entry=0x7f2612f2dba0 <__FUNCTION__.70732> "meta_window_unmanage", message=message@entry=0x5ba8fb0 "assertion failed: (window->display->focus_window != window)") at /build/buildd/glib2.0-2.41.1/./glib/gtestutils.c:2291
 g_assertion_message_expr (domain=domain@entry=0x7f2612f26e21 "mutter", file=file@entry=0x7f2612f2ac59 "core/window.c", line=line@entry=1778, func=func@entry=0x7f2612f2dba0 <__FUNCTION__.70732> "meta_window_unmanage", expr=expr@entry=0x7f2612f2c140 "window->display->focus_window != window") at /build/buildd/glib2.0-2.41.1/./glib/gtestutils.c:2306
 meta_window_unmanage (window=0x53725d0, timestamp=timestamp@entry=854617) at core/window.c:1778
 event_callback (event=0x7fffc24716d0, data=0x3ced050) at core/display.c:2763
 filter_func (xevent=0x7fffc24716d0, event=<optimized out>, data=<optimized out>) at ui/ui.c:261