Describe the bug
I build a house with doors and roof, the room is fully close by walls or glass windows. I wish to set Armory building but the anvil is not detected. The smithing table and grindstone yes.
I try the auto-detect function and place and replace anvil but isn't working...
I try to use anvil
I try to put anvil in another building

To Reproduce
Steps to reproduce the behavior:

1. Make a simple build a cube is enough
2. Place anvil, and set room with the blueprint
3. See the anvil not detected

Screenshots
If applicable, add screenshots to help explain your problem.

Version
MCA Version, Minecraft version, Modloader = 1.20.4 -> on minecraft fabric server

Latest.log
Append the log, just drag and drop the file here.
You will find the file in the (launcher and profile specific) minecraft save directory, in logs, called latest.log. On Windows by default %appdata%/.minecraft/logs/latest.log.