[Bug 44341] "Battle.net Helper.exe" component of "Blizzard App" crashes

https://bugs.winehq.org/show_bug.cgi?id=44341

--- Comment #1 from kolAflash  ---
P.S.
Sorry for using not the recent Wine version. I could only find Wine-Staging
RPMs for Wine-2.20 on openSUSE-42.3 (and the "Blizzard App" currently needs
Wine-Staging).

I just recognized whats not working:
After "Battle.net Helper.exe" crashes the Blizzard app is showing an error in
it's middle area (Blizzard App errorcode: BLZBNTBNA000001F4 (503)
Usually the Blizzard App shows recent messages from the Blizzard website in the
middle area. But now there's just the error message. So this probably has to do
with HTML rendering.
In the Blizzard App error message I can click "reload" and after multiple times
I could see the web content flash up for a second. Even text gets rendered for
a second (so the needed fonts must exist), before the HTML rendering disappears
and the Blizzard App error message pops up.