As you can see, the decor bonus string for materials like cooper, sandstone, granite, etc is wrong. decor bonus for cooper is 10%
When I construct 1 mess table with cooper ore, the bonus value is right, decor = 10 (decor base) + 10% = 11
Steps to Reproduce
Construct a building with a material that give bonus decor
This issue has been fixed in either a future version or updated in a previous version.