credits fields don't work

There is a problem with albums with various producers. I've added the producers separately to the tracks in question, but all of them appear on all of the album's tracks instead on only the tracks they've actually been involved with.

Also when I add a lyricist to one track it automatically displays that same lyricist on all the tracks. (I don't know what would happen if I added lyricists to more tracks on an album, because OCD keeps shutting down on me!)

Simply put: the credits fields do not work at all.

And even though those things are annoying, they're not even close to the incredibly irritating fact that OCD constantly shuts down every time I try to do anything concerning track information...