[GAMEPLAY] Raptor won't get knocked up bug (Riven 3rd q)

Firstly, I don't have any video footage of the bug, but it happens to me quite often. I don't pay much attention to it after level 1 as they are easy to kill but the bug may possibly still occur anytime throughout the game.

The bug is very clear and noticeable, and I believe can be game changing if doing a jungle camp at level 1 because dying is easy.

So here is how it happens to me (This bug I have only noticed on the red side, it might apply to the blue side, I'm not sure)

I do raptors over wolves when on the red side, anyways I sometimes experience the bug when I kill all the little raptors first (I use q combo with aa between each q activation to kill them all), I then auto attack the big raptor until my q cool down is done, when i use the q combo after the cool down I've noticed that the third q doesn't knock up the big raptor.

As said above, I think that this bug needs to be fixed as it can impact a game greatly if the player were to die because of the cc not working when it should be, the player would be at a huge disadvantage during laning phase due to not getting level 2. Raptors give the player enough experience to level up when killed which can then enable the player to recall and teleport to lane with more potions/ wards etc. for those who don't know.

NOTE: I personally think it only happens when the raptor stays on the same spot (next to the wall) and doesn't move.

This is my personal experience, I'd like to know if anyone else experiences it too! If so, a fix should be done. Thanks for letting me share!