in 15w31c when killed in the new part of the end you crash

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I thought I was going to spawn in the overworld
What actually happened was...:
Describe what happened here
my game crashed
Steps to Reproduce:
1.kill the ender dragon and go into the new part of the end
2.get killed somehow
3.then you think you will respawn in the overworld but you crash