Strange Chunk Placement

I was walking through a new world I had created, when I found a strange chunk error.

Seed: 1358388735

Coordinates:
x: -127
y: 81
z: 55
f: 3 (EAST)

Steps to reproduce:
1. Create new world with seed 1358388735
2. Walk/fly to x: -127 y: 81 z: 55 f: 3 (EAST)
3. See the strange hole with mini-forest and desert inside.