Items in bottom half of double chest disappear when reloading world

Summary:
Items in the bottom half of a double chest disappear when reloading the world. Single chests, ender chests, barrels, and shulker boxes appear to be unaffected by this bug.

Steps to Reproduce:

1. Create a double chest
2. Fill the bottom half of the chest with items
3. Exit and reload the world
4. Open the chest

Observed Results:
The items in the bottom half of the chest disappeared.

Expected Results:
The items in the bottom half of the chest should not disappear.

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Original Description:
Random items seem to disappear from chests each time I log into my world. The only pattern I can discern in the disappearances is that they are tools or armor, not blocks or materials.