https://bugs.winehq.org/show_bug.cgi?id=51405
--- Comment #2 from googlemail@email-postfach.info --- Thank you for your response and sorry for creating a duplicate. I only looked for bugs regarding winecfg, because anything else seemed to work.
Not sure how to report this for Debian Bullseye, though. Would be a shame if Bullseye shipped with a broken mesa package.