Shulkers on Peaceful

Put the summary of the bug you're having here
Shulkers on Peaceful
What I expected to happen was...:
Describe what you thought should happen here
If you tried to spawn a shulker mob in peaceful diffcaulty
What actually happened was....
Describe what happened here
The spawn egg worked...Pretty creepy
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...