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HitboxBackport

Mod

by Kwember

A small Mixin-type mod to backport sneaking through 1.5 block tall spaces from minecraft 1.13 and higher versions.

Type

Mod

CurseForge Downloads

1,530

CurseForge ID

1188561

Last Updated

Jul 25, 2026

Description

Hitbox Backport

A small Mixin-type mod to backport sneaking through 1.5 block tall spaces from minecraft 1.13 and higher versions.

 

The Minecraft 1.13 update included a change to the players hitbox when sneaking, allowing players to sneak under top slabs into 1.5 block tall spaces, this change was part a larger movement change for swimming, crawling and sneaking. This mod uses mixins to vanilla Minecraft's code to backport this change to sneaking to 1.12.2. 

 

- REQUIRES A MIXIN LOADER (Like MixinBooter)

If you find any issues or bug in the mod, please report them on the GitHub issues page!

 

Authors note: While there are a few mods that backport 1.13 swimming, crawling and sneaking in its entirety, i noticed that there werent any mods that backported just the sneak mechanic. As such i made this mod for those who are just looking for this feature.

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