When you open a chest or your inventory and you hold the key to go any direction (for example: W to go forwards) and then close the inventory / chest interface, you won't move in that direction. While in Minecraft Java Edition you will walk in the direction you were holding the key to. (I don't know if this is intentional).
Operating system: Windows 10 Home 64-Bit
Operating system version: 1709
Operating system build: 16299.64