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Chunk Save Fix Mod for Minecraft 1.20.1

Fixes a chunk save bug that can cut off features like trees in certain chunks.

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Updated 18.10.2026

Chunk Save Fix

1.20.1 port of the https://github.com/jaskarth/chunksavingfix-fabric/tree/main mod, fixes https://bugs.mojang.com/browse/MC-224729

Fixes a chunk save bug that can cut off features like trees in certain chunks.

Thanks to my friend elocindev for coding the port

How to install Chunk Save 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 on Fabric automatically.

  3. Launch the game

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

Manually

  1. Install Fabric

    The loader must match the game version of the mod file, for example Minecraft 1.20.1. 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 chunksavefix-fabric-1.0.0-1.20.1.jar (6 KB) for your game version.

  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: Chunk Save Fix should be in the list.

Minecraft 1.20.1 runs on Java 17: with a different Java version the game may close right after launch.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.20.1FabricChunk Save Fix - 1.20.1 - 1.0.05.7 KB

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