https://bugs.winehq.org/show_bug.cgi?id=51567
--- Comment #25 from Pavel pavel1r@gmail.com --- (In reply to CJ Bilco from comment #24)
https://www.winehq.org/announce/6.13
51331 Battle.net client unusable, reports "The Battle.net Update Agent went to sleep. Attempting to wake it up..."
Is that it? Sorry I'm new to this type of sleuthing.
I think that's the bug. I also noticed slower login in WoW with latest wine versions.