Self-Cloning Chunk Errors

There is an area that is cloning itself, or at least the chunks, throwing different clones everywhere.

What I expected to happen was...:
I expected there to be normally functioning chunk loading.

What actually happened was...:
I don't know how to describe it, but it seems that the few hundred chunks can seem to make up their coded mind what to put in the one area.

Steps to Reproduce:
1. I put everything in video to low or off (except brightness).
2. I put it all back up to what it was after leaving the menu.
3. Looked at an area, moved and it started to spasm out.