Ladder attached to a rotating structure triggers Jetpack
You can clearly see that the ladder attached to a static structure works normally, and the ladder attached to a structure that is attached to a rotor triggers the jetpack on and off.
Not sure if the Jetpack triggering is because of the structure being attached to the rotor.
The issue can be lethal to players with no hydrogen since they will fall down(on gravity) or float away(without gravity)
Video of the issue