Lighting a fire in a shed when your back is turned on the wall opposite the door you get visual effects of a full fire being in open air. Turning around and facing the shed you only get light escaping cracks.
This was done using the small shed heading west from the Vybor military complex towards Vybor. (Unsure of asset name)
Light a fire in this shed. Exit and close the door, circle the shed while looking at the shed and ensure lighting doesn't escape the shed beyond cracks. Turn back to the shed and see full lighting effects of an open air fire. Rotating the camera at the shed as soon as it is rendered the lighting effects return to dark. Appears to only occur on the back side wall; the wall parallel to the door.
Uncertain if more building types are affected.