Skeletons Won't burn in the day

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
Describe what happened here. When I was in creative I turned away from my building in the middle of day and saw a skeleton standing I wondered why it wasn't dead so i punched it and it died.

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...