https://bugs.winehq.org/show_bug.cgi?id=40907
David K. hevanen@googlemail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Version|1.9.13 |1.9.22
--- Comment #3 from David K. hevanen@googlemail.com --- Still does not work with 1.9.22-staging. Having vcrun2013 installed seems to make no difference. Keep in mind this is about the new client that is currently under development - the old one works fine.
This new client is based on Chromium (CEF), which is known to make problems with Steam due to its sandboxing. So it seems quite possible that this is the problem here.
However, since the new client will soon be the only way to play the game, it might be good to find a fix or at least a workaround.