I've just released Mp3tag for Mac v1.8.15 with the following changes:
Changed, Improved & Fixed
- Removed normalization of linebreaks when reading ID3v2 frames
USLT(UNSYNCEDLYRICS) andCOMM(COMMENT) to prevent display problems in Music.app. (#63695) - Prevented accidental drop and resulting duplicate of own dragged image when dragging cover art. (#51224)
It's a free update! You can update the Mac App Store version via the Update tab in the App Store app and the standalone version from within the app via File → Check for Updates .