When I create the world I set it to peaceful but then it changes back to normal. I then lock it to peaceful and it locks itself to normal, really annoying.

Put the summary of the bug you're having here

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

I expected that it would just stay on peaceful.

What actually happened was...:

Describe what happened here

It always changes the mode back to normal.

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. create a world on and set it to peaceful

3. go into it and then menu, options, mode to peaceful and lock it.

4. Go out of the menu

5. Go back into the menu and the mode will be stuck on normal.