http://bugs.winehq.org/show_bug.cgi?id=20411
--- Comment #5 from Chris sportflieger2004-wbug@yahoo.de 2011-08-13 03:10:20 CDT --- It seems the problem is related to the Windowmanager you're using, e.g. I don't get the error using xfce.
=> I cannot reproduce the problem any longer