Portal Hitbox Fix

reverts the v1.21.5 Nether Portal hitbox to a full block

815 Downloads

fabricutility

Rent Server with this Mod

About this Mod

In v1.21.5, Mojang fixed (?) a bug in the nether portal hitbox so that it would match how it's rendered.

This mod reverts this fix so that the hitbox is a full block again. This is mainly useful for farms that require nether portals to transport mobs.

Available Versions

Portal Hitbox Fix 1.0.0release

MC 1.21.5fabric

April 5, 2025

How to Install Portal Hitbox 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 (1.21.5).

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.5

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Portal Hitbox 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 (1.21.5). You can switch loaders with one click in the panel.

Is Portal Hitbox Fix compatible with fabric?

Portal Hitbox Fix officially supports fabric for Minecraft 1.21.5. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Portal Hitbox Fix – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Portal Hitbox 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.