https://drive.google.com/file/d/1wObIvxHEQdiu1Cxkwrq7Ho9jYVoJ3H6O/view?usp=sharing
https://drive.google.com/file/d/1tZmO6J9podBEIyvxbNWlvABy_2Z9jcRG/view?usp=sharing

Minecraft Version : 1.21.1
Mod Loader : Neo Forge 21.1.169
Storage Labels : labels-1.21-2.0.1-neoforge.jar
Moonlight LIB : moonlight-1.21-2.18.13-neoforge.jar

First of all, I apologize for my poor English. I am using a translator.
The label is obscured by the metal-like components on the front of the box.
So I would like to suggest that we need to set custom offset based on entity tag.
I apologize if I sounded rude. It must have seemed that way due to a mistranslation.

they are supposed to work like that. if you dont like that just rotate the chest. labels stick to any block hitbox. if yous see the chest hitbox you'll see that it will preciselyline up with the label