Kassadin bug

Type of bug : Gameplay Whats happeing : When you try a fast combo r-e with kassadin, it doesnt cast where your cursor is, but literally behind kassadin When it happens : everytime your delay between e and r cast is lower than 1 second Where it happened : in an aram game --> Howling Abyss (it literally happened everytime I casted r then e too fast, so about 15-20 times) Server : Na of course in the Howling Abyss map

For the probability to do it again, well I recreated it a good 15 times in the same game. Havent had the opportunity to do it in another game yet.