http://bugs.winehq.org/show_bug.cgi?id=12418
--- Comment #1 from Dmitry Timoshkov dmitry@codeweavers.com 2008-04-08 03:21:44 --- Looks like that's an intended behaviour for _NET_WM_WINDOW_TYPE_DIALOG type windows in many WMs. I'd suggest to file a bug/ask KDE developers about it.