Physics bug: cube stuck in moveable panel

[mpnordland]

Here's a screen grab of the dev console and the observed behavior. The panel was supposed to only open up when the cube was in the cube receptacle, however when I took it out, the panel retracted and then immediately extended again, trapping the cube. The only recourse was to restart the level. The second time through I observed the panel bug again, but didn't get the cube stuck. This was on a contributed test chamber that from what I can tell was made in the PETI editor. IIRC the level was entitled the Big Ol' Switcheroo, but I'm not sure.