Every time I play minecraft, my skin defaults to Steve. I've tried:

• reinstalling the game
• disabling all resource packs and shaders
• changing to a different skin

everything I can possibly think of, but no matter what I do, I look like steve. The launcher shows the correct skin, but in game it's just Steve. I've checked online and I can't seem to find any answers, as everyone who has problems with their custom skin usually is talking about multiplayer and it's just some kind of connection issue, but I'm also having this issue in a solo, singleplayer world. I've played mod packs on previous versions of minecraft and the skin loads fine.