draven's auto gained range, i stopped hitting for no reason from twisted treeline fountain.

none of draven's ability make his auto range longer, and he has not purchased any item that makes his auto attack range longer (IE, BT, berserker greaves, zeal and cloak of agility). but the bug is there. he and me was autoing each other while i am in fountain. i had more health than he did, then while i was fighting i stopped attacking him for no reason. and my champion( lucian) started to turn around and take the long way around the fountain to attack him who is standing right beside me but outside the fountain. draven just stooed there and he just q me two more times (and killed me) while i get further away from him. i couldn't attack him but he can attack me. this is clearly a bug.