not sure whther this should be in support but it is a glitch so i think so
Samsung core prime running android 5.1.1
I have been unable to replicate this when i want to but it has happened to me a few times, in the cirrus and the AC-130
I was flying around doing patterns in seatlle in the cirrus, but as it touched down and tried to let the nose down, the nose didn’t go down. I re calibrated and trimmed down to get it down, stopped, and slightly confused throttled up to takeoff again. Upon reaching 30 knots my nose was at 10 degrees (i normally rotatate at 60) so i aborted takeoff and looked on external view to see my elevons were in the full pitch up position, and if i calibrated they stayed there, the only way to stop this was to pitch really hard down, which was impractical for flying. I am not sure whther it’s relevant but i had some trim when landing (50%) but when the nose didn’t lower i removed it all and the elelvons didn’t change.