CS 777-300er autopilot turning off itself

Whenever I’m flying the CS 777-300er, the autopilot turns off it self somehow and this mainly happens when I’m using the fmc during mid-flight and when I go to the over head panel to turn on landing lights for landing. So is there a way to fix this? And is this a bug or am I the only one experiencing this?

I have been having trouble with the autopilot heading knob. It will not fly to the settng that is set. Why is this or is there a fix?

Have you checked your keyboard/mouse settings to make sure there isn’t a key that has two functions?

I play on Xbox using Xbox controller…

Do you play on PC or Xbox? If you play on Xbox go where the hdg is and click on the hdg button and then click on the knob and move it where ever you want it to go and then press “A”. Tell me if it work’s.