Put the summary of the bug you're having here
What I expected to happen was...:
the end and nether to generate normally
What actually happened was...:
the end and nether generate in strips
Steps to Reproduce:
1. build nether/ find end portal
2. activate
3. go through portal
Environment
Put your operating system (Windows 7, Windows XP, OSX) and Java version if you know it here
Duplicate of MC-58984