Not really a bug, probably more of an unplanned for event in a minor use scenario
I have some old 78rpm albums that I have linked the individual disc label images to their respective tracks:
I have image rotation enabled and it works fine (album art and correct disc art show) in a shuffled playlist.
But, if I play the entire album in order, the artwork is not refreshed, and I get the same unique label artwork for disc1/ side1 showing for all the tracks.