Sort of extreme chunk errors where random stuff, such as end portal frames are generated in huge veins throughout the Nether. ALso caused chunk errors in The End, as well as massive lag.
What I expected to happen goes here...
The Nether/End generates perfectly, with minimal lag.
What actually happened was...:
Large veins of random stuff generated throughout the Nether, causing massive lag, as well as causing chunk errors, weird generation, and a "vibrating" enderdragon in The End
Steps to Reproduce:
1. Download and install snapshot 12w49a
2. Enter Nether or End
3. Observe
Duplicate of MC-4200 , please use the search function to see if your bug has already been submitted. Currently over 30% of tickets are being closed as duplicate.