inventory and chests items all get deleted

Put the summary of the bug you're having here

What I expected to happen was...: to have all my items to go away and i can not get them back.
Describe what you thought should happen here I thought it would delete all my items and i could not get it back.
What actually happened was...: i would lose all my items in my inventory and in my chests and i could not get them back.
Describe what happened here I would lose all my items in my inventory and in my chests, and the stuff in my furnes and in my hoppers.

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...you can't trigger it it just happens
3. ...