Toggle Key Fix

This mod fixes MC-301281, which was erroneously marked as 'works as intended' by Mojang, and caused toggle sprint and sneak to be reset upon opening a GUI.

3.5K Downloads

fabricgame-mechanicsutility

Rent Server with this Mod

About this Mod

This mod fixes MC-301281, which caused sprint and sneak toggle states to be reset whenever a GUI was opened. This meant that if you have sprint or sneak toggled on, and you open a chest/chat/menu, your sprint and sneak would be toggled off after closing the GUI.

This bug was caused by Mojang's fix for MC-300695 only accounting for keyboard keys, not mouse buttons. The game would incorrectly reset toggle states for any keybind assigned to a mouse button when opening screens, even though mouse buttons don't have the same key-release behavior that caused the original issue.

Available Versions

Toggle Key Fix 21.11.0release

MC 1.21.11fabric

January 13, 2026

How to Install Toggle Key Fix on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "Toggle Key Fix". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Toggle Key Fix server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is Toggle Key Fix compatible with fabric?

Toggle Key Fix officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Toggle Key Fix – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Toggle Key Fix consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.