UNCONTROLLABLY RUNNING DOWN THE MIDDLE!!!!

Well this is an extremely annoying bug. It all starts when i join the game, purchase my items and get ready to head off into my lane.... When all of a sudden when i click towards (bottom, top, jungle anywhere) it sends me straight towards the enemy nexus! i try to click around to stop it. And the only way i can stop it is recalling. This glitch cause me a 5 game 20 minute queue, quite angry right now. Anyone else having this problem its happened to me quite a few times.