https://bugs.winehq.org/show_bug.cgi?id=43543
--- Comment #2 from Vincent Povirk madewokherd@gmail.com --- If you download the wine-staging source (https://github.com/wine-compholio/wine-staging/releases/tag/v2.16), you can have it apply patches to a Wine git tree using git-am, and use git bisect to find the patch that breaks this.