Underwater Swim Fix (MC-220390)

Mod

by bikerboys

Fixes the bug where if you hit an entity while swimming and holding the sprint hotkey, the server will think that you are not swimming anymore, while the client does. resulting in weird behavior.

Type

Mod

CurseForge Downloads

278,842

CurseForge ID

1251901

Last Updated

Jun 12, 2026

Description

Fixes [MC-220390](https://bugs.mojang.com/browse/MC/issues/MC-220390) a bug where if you hit an entity while swimming and holding the sprint hotkey, the hitboxes server and clientside will be different. Resulting in weird behaviour where the client thinks that theyre swimming while the server doesnt think that. So when you for example try to go into a 1x1 block space while experiencing this bug, you will glitch out until you stop swimming and swim again.

The bug really annoyed me in monuments so I fixed it.

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