[2.2.10] If you slip off a polyobject while above a moving floor plane, you'll snap to the moving floor plane.
This was encountered in Foliage Furnace Zone 2 which is part of the OLDC 2022: Round 1. I feel that this could've been a possible vanilla bug.
This part of the map has a moving polyobject and it's above a moving floor plane. I slipped off the polyobject while above the moving floor plane and I snapped right to it.
This doesn't happen if you slip off the polybject while above a non-moving floor plane, unsure if this occurs with other sector effects.