This is a bug, and using is an exploit, as it's avoidable. However, it's only really painful early game, after that, it's mostly just an annoyance. In almost every game I play there's a CM, either on my team or the other. In both cases, I politely mention to them that it's an exploit and to try not to use it. Occasionally I get the, "Yeah, I don't do it intentionally, but sometimes it happens." but mostly I get, "QQ mor, take it to the forums... I'm gonna do it to you all game to annoy you!" In the later case, they usually end up 2/10/2 anyway, and I choke back the urge to be a dick and say something along the lines of "How'd that exploit work out for you. *******."