how come every time Sion Q's I'm out of the indicator and still get hit

I played several games were i was against a and every time he charged up his Q i would get hit even though I'm out of the range of his indicator. It seemed that way every time, you get just right close to the edge but not on the edge of his Q and he would still hit you. Riot still doesn't know their own hit boxes. What's the deal, people say the game is unbalanced, one of the main reasons is faulty hit boxes and their indicators. Riot please fix your indicators, I play so I know when an indicator is not as it says because his Q goes farther than it shows when you look at the range.