hit boxes

ive noticed for a while now that some hit boxes and their animations wern't lining up, for example darius' grab has rarely been as short a range as his animation and more recently i noticed that riven's ulti's hitbox is wider than the animation. i know there are a few others but those are the first to come to mind and i dont know what the problem is i would just like to polity remind everyone that this is still a problem