Kayn fails to cast Q during E while on the edge of a wall and having used an auto attack (explained)

When Kayn goes through a wall with E and ends up on the edge of a wall but not outside of it and uses a basic attack+Q animation cancel (in that order) he will glitch out of the wall and will not cast Q. His Q will cost mana and go on cooldown.

This has caused 1 death so far on my playthrough. As someone who flow-casts (uses animation cancelling in combination with basic attacks, animations and movement) this happens all the damn time. I go through a wall, i hit a monster camp for example with a basic attack and Q immediately as my scythe connects only for it to break the ability and go on cooldown. It won't do damage or move me around. Just push me out of the wall.

Considering you can Q out of a wall in the middle of your E, this should not be an intended interaction.