Servo movement
Mine only does this if you have a non-standard pitch-curve and non-standard throttle curve programed in. My end points either don't effect it or I've not run into that.
But, what mine does is only the throttle servo is affected. For example if you give it full throttle at about mid stick it puts the throttle servo back to 0, I flew once with it like this (not knowing) and thought I was having some type of crazy engine problem. All I did to fix the problem was set the throttle curve at 99% and I've not had any problems since.