https://bugs.winehq.org/show_bug.cgi?id=42079
--- Comment #3 from Ryan Davis iconoclasmandheresy@gmail.com --- So AFAIK, this only happens on the official wine-devel and wine-staging PPAs, which are only up to RC2, so it a) May be fixed in RC 3 or b) May not be a problem in your particular build c) May only be in the Win-on-Win64 (WoW64) builds of WINE if you are on a 32bit system. The Debian/Ubuntu build process is very difficult and when I was building Wine by hand (because there were no WoW64 binaries,) it was easy to miss a step and screw it up.
The following steps /should/ reproduce the error: On Ubuntu 16.4 (Xenial LTE) add wine-staging PPA from instructions at winehq Install Battle.net client Install WoW Try and log in.
If that fails to reproduce, try adding a mobile authenticator to your account, that might be the bit that causes issues. If any logs or whatever I can gather will help, let me know.
I know that rolling back to 1.9.24 devel build fixes this.