Prerequisites

• I am running the latest alpha version of MineColonies and Structurize for my Minecraft version.
• I checked the MineColonies/Structurize wiki and made sure my issue is not covered there.
• I made sure that this issue is not a duplicate of any existing issue.

Context

• Minecraft Version: 1.15.2
• MineColonies Version: minecolonies-0.13.244-ALPHA-universal
• Structurize Version: structurize-0.13.64-ALPHA
• Related Mods and their Versions:

Expected behavior

Being able to setup charcoal as the stone smelter's fuel, and have him able to 'craft' charcoal by 'smelting' logs.

Actual behavior

The stone smelter requests 'Fuel' with a black square as an icon and won't accept charcoal as fuel - the fulfill button on the request page is also not shown.

Steps to reproduce the issue

1. Setup charcoal as a stone smelter fuel
2. Setup a crafting recipe of oak logs -> charcoal
3. Setup a minimum stock of charcoal in the warehouse
4. Try to give him charcoal as fuel

Logs

Can provide logs if needed.

Notes

This was working in minecolonies-0.13.237-ALPHA-universal where I made the setup - after I update to 0.13.244 today the stone smelter stopped working.

Viewers

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Oh wait, this is right. The worker cannot use charcoal to produce charcoal. this is correct and intended. you need multiple fuel types then.

Can I set a preference to charcoal somehow?

the first one you "click on" has preference

I've run into this as well, and I'm pretty confused. Why is using charcoal to create charcoal disabled? Is this deliberate limitation actually documented anywhere...?