I spawned my username Player head and I noticed the secondary layer is being rotated in the incorrect orientation based on the North, East, South and West directions. The World was created on the 3rd of January and the seed is ( 1 ). I have also seen this glitch in other worlds but the screenshots I have provided are from seed 1.

The player heads orientate properly if the head looks towards the North but only straight on all other directions break the second layer it seems.

Thanks for listening

(Mojang=>Tetris)