When you go into third person mode and start constantly looking to the right, you may notice that part of the head of the skin rendering on the hat layer. This may have to do with my graphics card, but it probably doesn't, because it just happens to render right where the side of the hat layer would probably be. In the image below, you will have to zoom it so that you can see every pixel to notice the bug (to the right of the top and bottom of the head). It doesn't always happen in the same areas (it may span the whole height of the head, but a may only be a little bit in the middle).