I am experiencing this on one of my maps. There's a "door" made as a platform that goes down, waits, up, stays; and there's a thin 3dfloor (16 units height) just above that platform. If player stands on that platform, when it starts to move up it makes player suddenly appear standing on 3dfloor as if he was pushed thru (maybe he actually is). This is 100% reproducible all the time, not one-time happened.

AFAIK, there's no way for 3d floors to 'crush' things, that's why the player passes thru the 3d floor, it would be the same for any other actor. EDIT: I can't really confirm if it's not possible to make 3d floors to crush things or not, maybe Janis can clear this up better than me <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->.

[quote="Firebrand":3s36vjjc]AFAIK, there's no way for 3d floors to 'crush' things, that's why the player passes thru the 3d floor, it would be the same for any other actor. I doubt it has anything with "crashing" player, it should collide with player, and usually it does, becuase player cannot jump thru a 3dfloor or drop down, 3dfloor may effectively serve as a solid ceiling and floor. But in this case either collision check works not well, or actor is being moved wrong way.