In game, items in chests cannot be clicked on in chests and can only be removed by breaking the chest. Also affects the inventory.

Items are permanently stuck in their place in the inventory and cannot be moved unless you die.

Steps to Reproduce:
1. Load up either single player with a bonus chest, or any server.
2. Open the chest, or menu, game mode dependent.
3. You will find that it is impossible to click on items and this ruins games for everyone.