As of the last firmware update (3.43), there is feedback but it is broken: parameter linked to fader 3 moves fader 1.
I've made a video documenting this issue: https://answers.presonus.com/62143/bug-faderport8-not-updating-its-faders-correctly-midi-mode
Maybe you can reply too to my post so that it gets some attention.
I think that Presonus understimates how many more sales they would get if they got this fixed. It would make Faderport8 the #1 choice for a MIDI controller with motorized faders. As of now, nobody gets it right but ********* X-Touch is better than Presonus Faderport just because of this problem.