Before Continuing:

• Check you are using the latest version of the mods and its dependencies
• Always include a latest.log if you are crashing
• Remove known hacky mods such as: Optifine, Fabric API/Connector on forge, and every kind of hybrid server like Mohist and Velocity. None of these are supported. Also try without other lesser usual suspects like Sodium and Lithium.
• If you are unsure which mod is the culprit.
  Disable all of your mods and enable them 1-2 mods each time to isolate the culprit
• Confirm that there is no existing issue with a similar description submitted in the list of issues.

Version

1.21.1-NEOFORGE

Supplementaries Version

^3.4.6

Moonlight Lib Version

2.22.2

Describe Issue

Hey there! Tried to add some Diamonds into my Shulkerbox, the diamonds can not be added in any way, including hoppers. Downgrading Supplementaries to 3.4.4 this issue vanishes.

Steps to reproduce:

1. Install Supplementaries version 3.4.6
2. Launch the game
3. Open a Single- or Multiplayer world
4. Place a shulker box
5. Open the shulker box
6. Attempt to place items inside

Expected Outcome:
When trying to move Diamonds (Shift + Click, Pickup + Drag + Click/Right-click, Placing hopper on top/side, etc.) into the shulkerbox, the diamonds should be moved into the shulkerbox and stored within

Actual Outcome:
The diamonds will not get moved, acting identical to a shulkerbox item, when attempting to deposit it into a Shulkerbox

For further questions, video or screenshots, or in case you can't reproduce this issue, please comment below :)