Put the summary of the bug you're having here

What I expected to happen was...:
The Creepers to still be where i died without having any issue.

What actually happened was...:
They turned invisible when you die fighting them without a potion effect so they are completely invisible.

Steps to Reproduce:
1. Spawn a bunch of Creepers around you.
2. Tried to use diamond sword to block explosion (forgot it was 1.9)
3. Die and Creepers turn invisible.