I've been using Mp3TAG for a while on Mac using CrossOver - to run Win version.
No problems at all.
Recently bough and installed Mac version and having some issues with covers/artworks.
Files edited on the lates Mac version show saved covers/artworks in the Mp3TAG but not in preview of the file on Big Sur.
Also what is interesting do not appear in the car app.
The issue is only with files/tags edited in the Mac version - no problems with older files edited in Windows version run on Mac via CrossOver.
Would appreciate some help as it's somehow annoying.
Cannot also run Windows version on Mac anymore - does not work on BigSur