Died in Hardcore mode. Go to create new world and see my old death screen behind GUI

What I expected to happen was...:
I thought I'd be the dirt background

What actually happened was...:
I saw my death screen from my just killed Hardcore world

Steps to Reproduce:
1. Create hardcore world.
2. Die. (I got blown up by a creeper)
3. Go to single player and click Create New World.
(I was fullscreen)