Hello @chrisp250, I use the beatstep pro too but never encountered your problem on mine setup.
I have a snapshot with all the midi channel from 1 to 16 receiving midi to each Zynthian’s layer assigned to a channel and to an engine also controlling the bank changes.
Have you tried to see on MIDI Control Center from Arturia which CC and midi channel is assigned to the transport section?
I will post you my settings. It can be a conflict with midi?
Have you tried to flash the sd card another time yet?
