Stuck Midi notes after 2.8 Firmware Update

Hi guys I'm using the mpc live 1 in standalone mode to control external hardware synths that I play sending midi from mpc port A to a motu midi express 128. I then route the midi on the motu to 8 midi out connected to each synth and play them switching midi channels from the mpc. All good until I updated to 2.8 (I also moved to a new mac system with Catalina which should be full supported by Motu drivers), now when playing notes from either the pads or the midi keyboard connected to the midi iN port notes get stuck and have to repress them to send note off messages. It also usually start sticking when the mpc is playing the sequence ,much less frequent otherwise, if not at all. Anyone has any idea where the conflicting messages might be originating from? thanks in advance

What happens what you ''cut out'' the motu and directly from the mpc to a synth? Same problem?

Hi, I‘m trying to do pretty much the same thing. I‘m getting stuck Midi notes only, when I change Midi channels while playing on the master keyboard.
What I‘m struggeling with is, that my vintage Synth e.g. Oberheim is completely shutting down when I use the
Transpose function on the mpc 2.8.1
After that I have to do a hardware reset. happens all the time. terrible
I found out, that the mpc is sending 128 note off commands each time I do a transposition in a sequence, that messes also the timing between the mpc and the drummachine and the appeggiater up.

Cheers Buddy