Rengar hop bug

I don't know if this applies to champions but at the at the top of the river on the left side toplane I was sitting in the bushes as rengar against an illaoi. So she is being annoying making sure to spawn tentacles everywhere and one spawns at the near the end of it and I, being a sneaky rengar decided I would jump on it. So I did. But I didn't It made me slide a tiny bit upstream but not actually land on the tentacle BUT it still dealt damage I will recreate the situation using rengar and marking the location of where Illaoi's tentacle was with a ward. Anywhere inbetween them caused the glitch for me, but may be even slightly further down river.