You cannot push leaves block with a piston

You cannot detect someone from looking West with command blocks

Whenever you enchant Shields, there is no glowing effect on the shields

Your hand position changes once you go underwater

You can row a boat on dry land

You can row a boat on land

You can't give yourself spawn eggs of squids or chickens with command blocks

You cannot leave a team with the Chain Command block by typing in "scoreboard teams leave"