What I expected to happen was...:
Normal world, didn't see it coming
What actually happened was...:
I make a structure w/o this glitch, and when i loaded the world it was going from place to place and sometimes there were 1000+ of the same structure.
Steps to Reproduce:
Idk any ways to reproduce this
Duplicate of MC-62958. This issue is caused by broken or outdated AMD graphics drivers. Please see that report for details.