Gnar Ult Bug

While I don't have video evidence or anything, I recently played a game where I think there was a bug. I normally play pretty clean with him (except when I'm vs renekton, I have no clue how to play that lane,) but this game, I noticed that every time I ulted after a jump/flash, the ult would go in the direction of the jump/flash instead of the direction I wanted it to go (the wall, my team.) If it was just once, I would brush it off as a misclick, but it happened every time I ulted after using either of those abilities.