I am using upgraded dynamic lighting on my maps, but the maps are from modules bought in the marketplace. Now in the DM view I frequently see rays of light in places where no light should be, there are no tokens emitting light, and the dynamic lighting walls should keep light out. Apparently those rays aren't visible to my players, I only see them in the DM view. Any idea where these rays of light (see room 22 example below) come from, and how to get rid of them?