Not seeing anything obvious in your logs bar the fact the files are opus (I don’t use this format myself).
You say you have tagged everything with musicbrainz, could you show me the tags from the \Ariana Grande\Positions (Deluxe) album. Also, do you have Prefer local metadata enabled on your music library ?
Finally, does a full plex dance (all steps) of all the Ariana Grande albums (best to do it at the artist level) fix the problem ?
