This is not a bug, since I believe it was programmed intentionally, but it's unrealistic and can cause spins and crashes during bombing operations:
Whenever the autopilot is set in angle or airspeed mode, moving to the bombardier position re-sets the autopilot to straight and level. This is no good. Whoever heard of an autopilot automatically changing flight modes simply because a crewmember moves somewhere inside the airplane?
But it gets worse. You have all your engines shot out. You are at 20,000 ft. You set the autopilot to best glide speed. You can easily glide home and will pass over an enemy field on the way. You go into the bombardier position to unload your bombs on the target and suddenly, just as you are about to pickle off the bombs, your airplane shudders, stalls, and goes into a spin.
What?
You investigate and learn the autopilot was programmed to automatically go into straight and level flight when you went into the bombardier's station, so with no engines operating you stalled out.
Totally unacceptable; it needs to be fixed.
