https://bugs.winehq.org/show_bug.cgi?id=42000
--- Comment #10 from winetest@luukku.com --- (In reply to winetest from comment #9)
(In reply to wow_on_wine from comment #8)
Created attachment 57503 [details] acceleration disabled
I get exactly this looking battle.net with wine-staging 2.8 all defaults.
winetricks -q ie8 is a workaround for this bug. with 32bit prefix, ie8 installed via winetricks and using wine-staging 2.8 I don't see this issue anymore.