Thank you for the quick response 🙂
I have generated and sent the dump file as instructed, but this new version already seems to be working fine without any change on my side:
I have now only 14 groups displayed instead of 45 before and RoonAlbumTAG is also working fine now.
I will do a few more checks to see if everything is fine, but at the first look the problem seems to be solved!
Thank you!