May or may not be related but I’ve seen something similar to this happen to me as I’ve been moving my music to plex. For me it seems to be related to files being renamed AFTER an initial scan of files into plex. I actually ended up with two album enteries with a mixture of tracks in each album. Check for this just in case.
If this is the same for you then to fix you can …
- plex dance the album/artist (all steps)
- fix match both albums entries in plex which should recombine them
I would also recommend reading the link from @beckfield above, its excellent. Also consider using musicbrainz picard as it will add tags which will help plex match stuff better.
