I discovered a fun one yesterday; downloaded google drive for desktop, wasn't able to sign in, got an "unknown error". Search for it, try all the solutions, delete gdrive cache, reinstall, reboot, etc. Started to think it might be registry related (I had done a bunch of weird stuff to the storage recently), then it ocurred to me to try the login flow through chrome instead of firefox.
It worked first try.
I don't think they explicitly broke it in ff, just that they don't test on anything that isn't chrome, which results in these nice side effects.