So last time I checked this only happens in the beta.

So basically whenever you put a cape on a skin in the beta (In a world), it doesnt show up until you click profile again. Then you can go back to your game, but something strange happens. The cape.. doesnt move with you. And if you have your size smaller then it looks like the cape is impaling you. To stop this you must reload the world, and I really dont want an update where we have to reload the world whenever we put on a cape for the cape to render properly.

Thanks for your time. I will try to include a screenshot of what the "impaling" part of the glitch looks like. Also, my MC username is "co8222".