Duke3D: (clipping) Crushed by sector corner with adjacent floor-aligned sprite (sectnum == -1)
In the provided test map, run into the corner next to the raised floor sprite. The player will jitter around. Do this repeatedly, and you will eventually get crushed inside the corner (sectnum == -1). By removing this one sprite, the jittering no longer occurs and the player will not be crushed.
This was caused by 4c9e2706. Possibly related to #169 (closed).