Maybe I need a notification subscription, because I saw this only by accident.
The sectors are ProDOS order (0, E, D, C...), not DOS order (0, 1, 2, 3...).
It works in AppleWin, for example, because they don't do the right thing.
It's not a bug, and not MAME's fault.
Reording the sectors will give you a good image. Do you need me to send one?