https://bugs.winehq.org/show_bug.cgi?id=43349
--- Comment #4 from Olivier F. R. Dierick o.dierick@piezo-forte.be --- (In reply to Olivier F. R. Dierick from comment #3)
Fixed for me with Wine 2.18.
Ignore that. I was using patched version. I was unable to test with plain wine 2.18 because the Blizzard App crashes on the login screen (new bug?).