Talon's Q Attacks Don't Register

I've found that sometimes, a Q from Talon won't register as an attack on a minion/champion. This occurs most often when attacking and then moving right after the animation completes, but can also happen if the target moves away while attacking. This might not be a gameplay bug, but rather a cosmetic one. I dunno, I just find that his Q doesn't land consistently like his regular auto attacks.