Illaoi Tentacle+ Q
Illaoi regularly is capable of hitting champions a significant distance outside of the in-game indicator of her Q's range, the issue seems to be worse when procing them with her tentacles. There also is an issue where when your tentacles use a slam an opponent can walk outside of the slam's indicated range and still be hit by the slam. I had this happen to me in a ranked match and was able to duplicate it in a bot game.