That's it, basically.
On the 'normal' Prophet 5 interface, where you have the chorus and analog delays displayed as external units to the synth, I cannot change the chorus type! The switch simply will not move. I think this must be a bug because if you swap into one of the other modes you can change the chorus type in the effects menu, then when you swap back to Prophet 5 mode the chorus type has changed appropriately!
Is it just me?