AP disconnects randomly during flight

[Riggie]

I set up a simple flight using MSFS from Leeds to Newcastle and select ILS landing for Runway 25. The FlybyWire A320 follows the Auto flight path for 10 - 20 mins ( the Aircraft is on Auto everything, Throttle / Heading / AP ) then without warnings or me touching any buttons or Sidestick it drops into Heading Mode ( see ND display 15 secs in on the attached video ) it is also shown in the FCU at the same time. No way will it engage the MSFS plan again, I can steer the aircraft using the HDG and switch on the ILS to land just to complete the flight.
I would say this happens on all flights now. In the upper Ecam, it says " Manual landing Elevator " this is the first time I have seen this but I don't think it is related.
I tried the exact same flight using MSFS Neo and it doesn't drop out.

P.S when I steer the aircraft to the final approach and switch on the ILS, the HDG automatically went to NAV and landed as normal?

Nav.to.Man.21secs.in_2.mp4