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-FABRIC

Supplementaries Version

supplementaries-1.21-3.4.16-fabric

Moonlight Lib Version

moonlight-1.21-2.23.9-fabric

Describe Issue

When eating from the jar, the items that are still inside become invisible. This happens because the player.eat method consumes the item in the first slot of the container. As a result, slot 0 of the jar becomes empty, and everything breaks.