MCDU Brightness issues

I have been enjoying the B747 near trouble free for past many months.However after a little break when I returned it has come up with following bugs:-

  1. The MCDU lights up at perhaps the lowest level and I can’t increase its brightness
  2. Landing gear becomes active without any input
  3. Parking brakes get engaged on their own
  4. Sim rate gets engaged without any input.
    I am on Xbox and use Velocity One Yoke and Throttle quadrant