https://bugs.winehq.org/show_bug.cgi?id=37630
--- Comment #5 from Rosanne DiMesio dimesio@earthlink.net --- (In reply to YAOMTC from comment #4)
(In reply to Rosanne DiMesio from comment #2)
Are you using the unofficial winepulse driver? If so, please retest without it.
Found it! It's wine-multimedia in AUR. Updated pulseaudio and installed wine-multimedia and sound works correctly now. Thanks!
Sounds like you went from using winealsa to using winepulse, with winepulse fixing your issue. Is that correct?