Set type to Artist cover image

I dont now if it is a bug or not, but sometimes when i set an image as artist cover, it does not save:
Add the image:
imagem

change the type:
imagem
Save or restart the mp3tag, it stays at front cover:
imagem

What kind of file does show this behaviour?
AFAIK not all file types support all cover types but only one like front.
see e.g. here:

1 Like

This file
folder

i use an web source to put the artist in mp3: Audible.com#Authors images.src (2.5 KB)

i save it as front cover first and then change it manually to artist.

is that an mp4 file? then the cover type can only be set to front or back

1 Like

ha it is, thank you.