Lux's Q seems to land a lot more than it should. Often it will clearly look like it has been sidesteped, but for whatever reason the target is rooted anyway. The hitbox is larger than it should be, it goes beyond the visual in game. This is the same with her ultimate, the hitbox is much larger than it looks. It's possible that this is a problem with a skin or interaction with another champion's hitbox, so to be more specific, this has most commonly happened to me in games playing against Lunar Empress Lux as Bard (however I still think the problem is present in all of her skins). Please consider fixing this problem since Lux is pretty strong right now and landing her Q is a death sentence for squishy champs.