Player Skin and Skull rendering

Custom player skins have wrong texture seem to either be blank, or squid stretched over players body (only appears to other player not yourself), and some parts seem to not render at all.

When using the give command for these corrupted players skulls, weird rendering issues occur. ie:no more armor slots when wearing head, pressing f5 when wearing head causes player to render upside down and not follow name tag, stained glass disappears when wearing head and opening inventory.