Dynamic Lighting Holes

So I really enjoy the dynamic lighting feature but I am running into a strange problem I am not sure how to solve. When characters are on big maps there are some spots where they can stand in that for some reason will illuminate different unconnected parts of the maps. The rooms are lit but there are direct walls blocking this view but the room is somehow viewable to the players. Is this just a glitch? Do I have to redraw the lighting lines? Is there some range limitation?  Edit: My players have not seen this it is only what I see going through the map with Ctrl+L to see their point of view.  

Is this with Legacy or Updated DL? Also, consider using a dummy account to get a player's POV, as ctrl-L is not always an accurate representation of what players will see.

Another thing to check. Make sure you are not using circles for any of your DL lines. Mathematically, they do strange things to Line of Sight, and the recommended practice is to roughly approximate them with polygons.