http://bugs.winehq.org/show_bug.cgi?id=23233
--- Comment #11 from Alexandre Julliard julliard@winehq.org 2010-06-21 13:24:21 --- The test case does sometimes show the new window behind the existing one on Metacity. I have no idea why. It seems to work fine on KDE and fvwm. I'd suggest filing a bug with Metacity.