Describe the bug
So with a few friends we found we can duplicate everything that was on the first slot of the left hand(this is a god thing)
from the mod RPG INVENTORY/Slot Customization API
Hi mate, The problem is, can replace other weapons or tools in the inventory slots(really a bad thing)

To Reproduce
So The Problem is the "Advanced Feeding Upgrade" from the mod "Sophisticated Backpapcks" and the slot that you leave after changin to the main hand(item are in there.)

So everytime it eat for being hungry or when hurt, It will be replaced the blank slot or item for the one is on the main hand

Expected behavior
If we don't use it that upgrade wont duplicate or replace a item when it eat

Screenshots

Versions
Fabric v1.20.1 modpack is the one I made for play with friends https://www.curseforge.com/minecraft/modpacks/otherwonderfulls
On the github from RPV Inventory already made a issue and put a video there. TheRedBrain/rpg-inventory#14

Fixed in dev-feature-update

New release is out, this should now be fixed.