Thresh main here. I would love this bug to be fixed if it was one, but it's not. It looks off because you could get hit by the very tip of the animation but the drag animation will always center the ability, so the visual snaps. Other abilities don't tend to stick to a player like his hook does, so others abilities don't look so jarring visually. There is also the lollipop effect. Another thing is that the tip of the skill is where it gets triggered to, so a good hook can pass a minion hit box before the minion would be there but the hook chain can pass over them no problem. I would hate to have inconsistency like that because that means my gameplay would be effected too by snapping to minions it shouldn't have hit or missing an enemy entirely when it clearly should have hit. Hope that helped.