https://bugs.winehq.org/show_bug.cgi?id=48847
--- Comment #5 from Austin English austinenglish@gmail.com --- I wasn't able to reproduce in 25 tries with WINEDEBUG set, but was able to get the output/winedbg info from another deadlock.
Note that I've seen similar in dotnet461 (usually when running winetricks' tests), but I'm hoping they're the same root issue.