MP3 album artwork not updating

[TheDreadPirate]

Some applications will make changes to your music tags/images without changing the modify date of the file. In that situation Jellyfin would not detect the change since the change in modify date is the trigger to re-scan the file.

Depending on the app, it may be configurable to have the tagging app change the modify date. Musicbrainz Picard is the app I use and it can be configured update the file's modify date when tags/images are changed.