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Off Hand Tick Fix Mod for Minecraft 1.20.1, 1.21.1

Simple mod that fixes items not ticking properly in the offhand, fixing unexpected behavior by some mods.

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Updated 18.10.2026

Off Hand Tick Fix

A simple mod that fixes items in the offhand not executing the inventory tick method, this can fix unexpected behavior by some items when using them in the off hand, mainly Simply Swords (the reason why this mod was made in the first place)

Warning

While this mod is meant to fix things, it can also create unexpected results if not careful. That's why the default config only applies to Simply Swords items, I am not sure if this will impact negatively in other mods that might have a workaround around this already, so it's best to use this mod with caution and test that all items work as intended.

Can be configured in config/offhandtickfix.json5

How to install Off Hand Tick Fix

With Millida Launcher

  1. Install Millida Launcher

    The launcher is free: download it at millida.net/launcher and sign in with any nickname.

  2. Click “Install” on this page

    The launcher opens and installs the mod for Minecraft 1.20.1–1.21.1 on Fabric, Forge or NeoForge automatically.

  3. Launch the game

    A profile with it appears in the launcher: click “Play”.

Manually

  1. Install Fabric, Forge or NeoForge

    The loader must match the game version of the mod file, for example Minecraft 1.21.1. After installing it, a separate profile appears in your launcher.

  2. Download the file for your version

    In the version list above, pick the file offhandtickfix-fabric-1.0.0-1.21.1.jar (8 KB) for your game version and loader.

  3. Put it in the mods folder

    The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.

  4. Launch the loader profile

    Open “Mods” in the main menu: Off Hand Tick Fix should be in the list.

Minecraft 1.21.1 runs on Java 21: with a different Java version the game may close right after launch.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.21.1FabricFabric 1.21.1 | v1.0.07.9 KB
1.21.1NeoForgeNeoForge 1.21.1 | v1.0.07.4 KB
1.20.1ForgeForge 1.20.1 | v1.0.07.8 KB

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