Ah ok, I'm not sure what would be causing the problems in terms of your code then, but here's a quick gif capture if it helps: https://gfycat.com/blondsnarlinghornet
I did notice while recording this that it's not a constant rotation. You can see in the gif that it's static when I jump around a bit, but then I turn the camera slightly, and after that it starts turning to the right without input, even when I tried turning it back to the left.