https://bugs.winehq.org/show_bug.cgi?id=48114
--- Comment #2 from Tod Jackson tod.jackson@gmail.com --- Sorry for the noise. I think the staging 4.20 introduces some incompatibility with 'winetricks sandbox': Executing wine regedit /S /D HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer\Desktop\Namespace{9D20AAE8-0625-44B0-9CA7-71889C2254D9} wine: could not open working directory L"unix\home\tod\", starting in the Windows directory.
I'll ask about it on the winetricks github.