I'm animating the fold of a paper object. I added a Child Of constraint to the objects, and the target is a bone. The bone is parented to the next object. When I go into Pose mode and rotate the bone, it flips / mirrors after it goes past 90 degrees. (see this video i made: https://www.youtube.com/watch?v=C6BACzgD6hA ) What am I doing wrong?