Hi Xavier! Sorry for the slow reply:
It stops completely receiving midi. It stops on the display too. Sometimes it seems to start up again suddenly after a while but I'm unsure if there is a pattern to this. Sometimes rebooting it solves it, sometimes not.
The same midi info plays on other modules, its standard note data w/o ccs being sent from my octatrack through my midi hub.
I won't be able to take a clip for a few nights. I wonder if its some short going on inside, I'll probably open up the unit and see if anything weird is happening inside.