What I expected to happen was...:
I died in a hardcore world and I pressed spectate to see what I had done in my world. I expected to see my world, my house, etc.

What actually happened was...:
All I saw was a void and the mobs in the world. I could not see blocks anywhere. Only entities are visible, the rest is a void.

Steps to Reproduce:
1. Die in a hardcore world
2. Press "Spectate"