Base information

• Minecraft version: 1.20.1
• Mod version: 3.1.2.588
• Minecraft Forge version: 47.2.20
• Mod Pack: (if applicable) ATM9 To The Sky

Description / steps to reproduce

There is a problem with the display of equipment. when you play online, other players do not see your equipment, and if you throw a bow or pickaxe on the ground, they are invisible even to you

First, are you using any kind of external shaders? If so, uninstall Oculus.

Second, are you running any mods that change rendering like Optifine or Rubidium? Replace them with Embeddium.

Finally, are you using Forge or NeoForge?