Leaverbuster system flaw?

Has anyone else experienced the following? I got a leaverbuster warning even though I didn't leave any of my past games. I'm thinking it is just because of teammates reporting me for leaving that either don't like me, which I find odd becaues I generally don't type in chat AT ALL, or because of trolls or something I'm not really sure. Hopefully this is doesn't result in an afk ban. :/