Something is going wrong.
m4a files are losing tags. When I am writing specific fields in mp3tag.
here is a example. Mac finder is showing the album artwork, music app is also showing artwork (we might claim its coming from library). artwork is visible in finder.
but mp3tag do not show the artwork.
Every folder, with m4a/aac files, after the first three files, songs are losing artwork and tags.
attaching the same song for testing.