This may be just an issue in Source but I noticed this strange light behavior in the beginning of Office Complex. The light casted onto the brush treats it like a hard edge surface where the edge of the tris are.
bm_c1a2a
-512 x, 178 y, 72 z
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.