I can confirm, that the bugs are fixed with SCUMMVM 2.2.0.
GOG has not updated the installer (and probably won´t anytime soon).

1) Just download the new Version (Windows 64 - zip-File) from:
https://www.scummvm.org/downloads/
2) Extract it
3) Copy the content to <installdir>\Phantasmagoria 2\scummvm and replace the files.

Done.

That's great, thanks for the info. I'll update it manually next time i play.

GOG probably won't update the installer because the basic game works just fine with ScummVM 2.0. At least i haven't had any problems with it.