While not a bug, my personal point of view is that when you tag a song's genre and choose "apply to all", that choice should apply to only the songs in that particular album. There are many reasons why you would not want to apply those changes for every song in your library which are associated with that particular artist. Maybe you could change the way that portion of the tagging feature operates.

Thanks for all the work you put into EJ and your attention to the input you get from this forum.