explained it there already (http://forums.beyondunreal.com/showthre ... ost2517276
) but, here is a copy of it:
It's a lighting problem, but its not really a lighting issue, its caused because the origin of the body is insight the world geometry .
Basically its a map issue which could have been easily avoided. 227g/h is just a bit more sensitive to such mistakes as it handles many things more accurate (in this case ighting visibility was changed center of render bounding box rather than actor location).
That's very sad for old maps, but fortunately this happens only in very rare situations. So new maps can benefit from it with "little losses".
Besides, lighting itself wasn't changed, except specularity, which made meshes unlit partially even if there was no light source at all. Now the lighting is there more accurate too as it only displays light which is actually really there.
Of course this can be taken as disadvantage or even "bug" if you wish, but there are a few things in which we suffer from "the sins of the past" just for fixing bugs, like this one above.