http://bugs.winehq.org/show_bug.cgi?id=23353
--- Comment #9 from Brandon Howard FinalCrisisSX@Hotmail.com 2010-07-02 22:41:43 --- Apologies for a third message, I wish there was edit, but..
I seem to have found a way to reliably reproduce this in rc6 now actually. I'm running gnome (whatever the current ver in Arch is.. 2.30.2?), but it would probably occur on any other wm/de.
1) Start with all windows closed.
2) Open a web browser. I tested this with firefox and chromium, presumably it would occur on any other or similarly with any other apps, but these reliably do it.
3) Minimize the browser to the task bar.
4) Right click the *system tray icon* for steam, and open "Library" and then right click it again and open "Friends", in that order. I don't know why, but it apparently doesn't happen if I do it the other way around. Do not click on or do anything further with these windows.
5) Click the task bar entry for the web browser to maximize it again, then minimize it after a few seconds.
6) Try to click the close button on the steam Friends window without doing anything else. It will not work. It will act like it's going to close, then pop back up.