When you get the level up item from the keystone that gives you items after level 18, the level up ability arrows show above your skills and they don't go away, and they're not interactive, they just stay there.
This happened to me as well playing with Kelptomancy top lane as Trundle.
I had the same thing happen to me just the other day, so this is still an issue. I'm hoping this is a known bug by now and it's being worked on. It's something that seems _very _minor, but when you're so used to your buffs being on a specific area of the screen, and suddenly they're not in that exact place anymore it can be pretty distracting.
