No Ender Dragon
What I expected to happen was...:
I would get into the end and defeat the ender dragon
What actually happened was...:
the ender dragon didn't spawn
Steps to Reproduce:
1. get into the end
Environment
Put your operating system (Windows 7, Windows XP, OSX) and Java version if you know it here
Duplicate of MC-82816. Please search before reporting issues to see if your bug has been reported before.