[1.16.5] Libraries issue after install

[LPTEole]

Minecraft Version : 1.16.5

Mohist Version : 8.1.3

Operating System : Unix (not sure)

Concerned mod / plugin : Spartan Weaponry / supplementaries

Logs : no informations in the logs

Steps to Reproduce :

1. Stock items in the sack or quiver, and move it to inventory (not in the action bar)
2. The sack / quiver will loose all items stocked
3. Modded enchantments can disapear in the description of the book (and forget the enchantement) in the same configurations
4. Treasure carts are locked to an other created cart
5. I preceise all are worst in creative (the action bar got the same issue)

Description of issue : all container modded items are "cleaned" when they are moved in the inventory. I precise it appears after a server migration for all informations I wrote.

[LPTEole]

I add a comment to add informations that I have tested during the last month :

• The mods work finelly with forge only. It seems libraries are not finelly detected that's I could see, in particular the net.minecraft.*
• Few plugins are not able tu be download finelly, some .class are missing after a try of install again