This bug appears occasionally for no apparent reason. Basically, there is a 3x3 wall of black blocks in one direction creating a corner with another 3x3 wall of black blocks. There is also a 1x1 on the end of one of these. This only occurs on the bedrock version as far as I know. This bug will sometimes go away upon teleportation involving you, changing the weather or changing the time. However recently it started simply coming back.

PLEASE HELP SAVE MY SANITY