[Gameplay bug] Ornn's ult vfx is way faster than its real hitbox

I was playing a coop vs IA game as Ornn and I noticed that, whenever I ulted, the vfx of my ult wasn't synchronized with the actual hitbox of the fiery ram. Basically, it looked like the ult had already run past me, but in reality I was still able to press R again and change its direction by headbutting it. It was extremely weird.