Sometimes Visual Studio for Mac will crash when trying to select a .cs file from Finder to add to my project. Once that happens, Finder is forever hosed until I reboot. Even with Visual Studio for Mac not running, if I go to Finder and just select a .cs file, Finder crashes! I would guess it has something to do with a bug in Quick Look or whatever a Mac application does to customize Finder when it gets installed?? Very annoying!