What happened:
When multiple ? blocks are placed, their loots are the same.

What I expected to happen:
I expected that each ? block would have a different loot each time I click on it.

How to reproduce:

1. Place multiple ? blocks.
2. Loot them.
3. See that they have the same loot.
4. Place multiple ? blocks.
5. Loot one of them.
6. Place another ? block.
7. Repeat until you see that the looted ? block has another loot.

Fixed in 1.0.1.