Pyke's Held Q can sometimes push people across walls instead of pulling them towards him.
While 1v1ing one of my friends with Pyke we found that casting Bone Skewer while standing against a wall it is possible to push an enemy pyke instead of pulling him. This seems to only occur when Pyke is standing immediately adjacent to a wall and casting Bone Skewer at an angle from the wall.
Here's a video of us testing the interaction on different walls with varying success:
A map of the bugged spots that we found in the video: https://i.imgur.com/bOotfDh.jpg
Unfortunately we weren't able to test to see if this bug occurs with other champions however, when I attempted to replicate this in a training mode game with a dummy it didn't seem to work.
In addition to this some walls seems to cause the Q to behave irregularly, pulling people over them at odd angles.
1. Have both players select Pyke.
2. Level Q
3. Have Pyke stand against a wall
4. Cast Q at other Pyke
5. Other Pyke will go over the wall instead of being pulled towards you