Changed cover is not saved when directly editing in file list

I can reproduce the problem on Mac.
First choose a file. Switch to safari, move per drag an drop a cover to mp3tag.
The cover is displayed. Click in the Title in the List of file from the song with the new cover, change something, like a space at the end. Now click beside the song, on other line.
The title change is saved, but the cover is lost.

I've moved your post to the #mac category and can confirm your observation. Thanks for pointing!

I'll try to fix it with the next release.