I'm also seeing a lighting issue with windows on a split level in my game, but the roof is not a factor; it's the split leveling that's causing it. It happens at all wall height levels and for any window that is placed near the top of the wall; the closer to the top, the darker the shadow cast on that portion of the window. Depending upon the size and shape of the split level area, not all windows may be effected. I started with a 4x4 space with 2x2 windows along the exterior walls, and those windows all had the darkening. When I expanded the area to 9x9, only a couple of the 2x2 windows on the far right had it. Will add to our list.
