Technical Specs (please complete the following information):

• Craft to Exile Version: 2.15.0
• World Type: Multiplayer
• RAM Allocation: 4GB

Describe the bug
Productive Bees comb block upgrade produces regular combs. I have 2 diamond bees and 1 emerald bee in an advanced bee hive and instead of producing comb blocks, regular emerald/diamond combs are created.

To Reproduce
Steps to reproduce the behavior:

1. Have a diamond bee in an advanced honey comb
2. Add a comb block upgrade
3. Leave the bees to their business
4. Come back later and check the hive

Expected behavior
Diamond comb blocks should be waiting for you in the hive

Additional Information (screen shots, etc.)
I haven't tested this with bees other than emerald and diamond but I'd imagine it would

Adding an expansion box next to the beehive and moving the upgrades to the slots on the right fixed this. The text in the book of bees ("can be further upgraded") and the fact that shift + clicking on the upgrades added them to the output slots confused me.