You wouldn't happen to be on Linux would you? If so it's useful info so the dev isn't chasing ghost bugs on windows and so he sees the Linux player base and considers compiling native for us.
From what I understand, the issue is that the new version of Unity uses dlls and system calls that simply aren't in wine or proton yet; if it were compiled for Linux it would work, and if it were on the older Unity it would work. Probably newer versions of wine or proton will run it soon.