I made a chest to put supplies in outside of my Nether portal. I went through the portal, died, and the chest along with all of the items were gone. I checked where the items were previously, and they were not there either.

What I expected to happen was that my chest would still be where it was when I had entered the portal.

What actually happened was that my chest was gone, along with all of the items in it. The items were also not in the chests they were previously.

Steps to Reproduce:
1. Put a chest near a Nether portal right before entering.
2. Enter the portal.
3. Exit the portal through dying or walking out.
4. The chest might be gone (not sure if it happens all the time).