[PBE] Graphics Bug

http://prikachi.com/images/459/8891459g.png As you can see in the picture there is a graphic or black line that slices the map. I couldn't show this on my own League because I don't have access to the PBE but if you think that the line is face or something: https://www.youtube.com/watch?v=ppfGNp4YgIE here is the video. The minute is 6.15+, as you can see the line stays in place eventhough the camera moves.

Have a nice day :)