Want to jump in and say I’ve seen this happen as well. It’s pretty easy to replicate…
- add an album and let plex scan, match etc…
- ensure it displays correctly in the plex webui
- now rename a couple of tracks in the album, doesn’t need to be many, just a few
- scan the library
When the scan happens it seems to fail the match the renamed files and places them inside a new album entry, this then results in duplicate albums in the webui. I’ve Prefer Local Metadata enabled and my files are all tagged with musicbrainz picard.
Workaround I’ve been using is to empty trash, then fix match the resulting second album which will join them back again. 9/10 this works but sometimes I’ve been forced to plex dance the album.
Logs can be provided so I’ll let someone from plex ask before DMing them.
