http://bugs.winehq.org/show_bug.cgi?id=58628
--- Comment #3 from Ignacy KuchciĆski ignacykuchcinski@gmail.com --- (In reply to Izu from comment #2)
Having this same issue on KDE too; everything is rendered and usable fine if I force the main window to always be underneath everything else, so it just seems to be something causing an ordering issue?
Yes, on GNOME I additionally observe in the reproducing scenario the launcher moving to the top after trying to go back to CSP from another workspace, and the in the overview they flicker black for a second. So it would look like the ordering is almost correct, just upside down.