Minecart issue

Whenever I do /tp @a it says "The entity UUID provided is in an invalid format."

Mob in side a block. This has been a bug for long time it's been a bug since 1.0...

when your Under ground go to the barrier: If you put "stick pistons" on that block the piston will make the block go out of the barrier.

sometimes the Barrier bugs out and can let go though it (not the sky barrier).

Sometimes in creative the survival inventory chest glitches out.

Sometimes when two music plays at once it lags your world (A lot of lag for me)

I made a "cobblestone generator" I broke the cobblestone while shifting near the water and when the cobblestone generated again I glitched through the cobblestone

Messed up textures: Redstone and upside down stairs.