http://bugs.winehq.org/show_bug.cgi?id=12640
--- Comment #13 from Dmitry Timoshkov dmitry@codeweavers.com 2008-04-20 07:11:09 --- (In reply to comment #12)
IMO, mapping the zero-sized window was not the best way fix for the disappearing taskbar, precisely because of all these problems (the patch I proposed to fix bug 12264 does not present this problem, AFAICS): we should just accept the fact that X window managers can't handle the zero-sized control window properly, and get done with it.
If you have a better idea feel free to send a patch.