Some chests in the Woodland Mansions do not contain loot.

When a Woodland Mansion generates in a world, some of the chests do not generate with anything in them. Maybe it is an intended feature, I don't know.

What I expected to happen was...:
I thought all the chests would contain some loot.

What actually happened was...:
Most of the chests are empty.

Steps to Reproduce:
1. Go to a Woodland Mansion.
2. Find a few chests.
3. Look inside and some of them are going to be empty.