Ich nehme an, dass das der Schatten eines models ist?
Wenn ja, hast du schon
var shadow_stencil = on;
probiert?
EDIT:
seh gerade, dass das nix ändern wird:
Quote:
Dynamic shadows are not clipped by walls. A shadow can be cast on a wall, at the back side of the wall, and on the floor behind the wall at the same time. Take care that level and models are very dark in unlit parts (or use the cast flag) to cover or suppress unwanted shadows.
Quelle: Manual