Item affected

Armor stand with item (nothing happens):

How its supposed to look:

Im not sure if this is an issue of this mod or botania, but I thought id let you know!

Using custom texturepack that changes the sprite of the wings, but it doesn't work on default textures either.

Versions:
Minecraft Forge: 1.20.1 - 47.2.17
Curios API: 5.9.1+1.20.1
Curious Armorstands: 1.20-5.1.0
Botania: 1.20.1-444-forge

Thanks for the report! Unfortunately this is something that would have to be fixed on Botania's end. They specifically check whether an entity is a player before rendering the item. I can't really find a good reason why it's like this though, so it wouldn't hurt to report it to them.
https://github.com/VazkiiMods/Botania/blob/ec7870b8fec5066865e55730cb97a00a974affde/Xplat/src/main/java/vazkii/botania/common/item/equipment/bauble/FlugelTiaraItem.java#L279