items in hand appearing higher up on screen and other hand animation bugs

So one day, I booted up Minecraft on my Xbox. y'know, the usual stuff. i load up my world and notice that my bow and shield seems higher up in my hand than usual, but it is only these two items. everything else is fine. Then i eat a cooked chicken and the item gets moved to the left of my screen whilst the animation plays, then it moves back. Since then my animations have been permanently stuck this way, I've tried switching worlds, restarting the game, even reinstalling it. I don't know what to do. Please help!