https://bugs.winehq.org/show_bug.cgi?id=45814
--- Comment #11 from Maciej Stanczew maciej.stanczew+b@gmail.com --- I too didn't see this issue since about 1-2 months ago. Also, the Lutris Wiki[1] suggests "Use wine version 3.20 or newer" regarding this problem -- so maybe there really was a change that fixed it (or maybe it's just a coincidence and Battle.net fixed itself).
[1] https://github.com/lutris/lutris/wiki/Game:-Blizzard-App