Minecraft Version

1.20.1

Supported Mod Version

3.0.0

Supported mod's Curseforge

https://www.curseforge.com/minecraft/mc-mods/caverns-and-chasms

Details

Azalea and posts were both added in a 1.18 version, however they are not registered for some reason

Aw

But this should break with every mod with azalea wood, like ecologics, so it’s still an important fix in my opinions

ecologics is hardcoded to not do that. We'll take a look at this once that mod is available for 1.20

Will check.

I need to know which Furniture mod is it?

EDIT:
🤦🏻‍♂️ just saw the title and it answered my question

UPDATE:
Just checked the source code. it has .requireChildren("fence") which mean it need a fence from woodType from wood mods

if a woodType don't have it, then it will get skipped. You should check in Caverns & Chasms to see if a WoodType has one or not

UPDATE:

From what I find out is that Caverns And Chasms aren't available for 1.20.1. There is only 1.19.2 for the mod. Are you sure you got the right Wood mod that have Azalea?

We won't provide support form payed mods or mods that are not available for the current version on curseforge or modrinth

You can re-open this issue when the mod is available for 1.20.1.