Denoise-AI puts out purple-ish images and AI masks don't work

Hi all, 

I just tried to apply the Denoise-AI at 50% on one of my .cr3-raws from my Canon EOS RP.

It puts out purple-ish images (see screenshot). 

Also, when trying to create a mask that affects the sky via the AI-tools, it doesn't detect any sky in an image where there definitely is a very apparent sky (see screenshots as well). The same goes for portraits where there is an obvious face in the image when trying to apply the automatic motive-masks.

It seems like the AI feature pack is in some kind of defect state... 

I already tried restarting the PC and reinstalling LrC so I assume that it's got something to do with the current version as a whole. I don't have any updates available for neither LrC nor Camera Raw.

Thank you for any support in advance! I'm helping myself out with linear masks for now 😄