Underwater Swim Fix Mod (1.21.11, 1.20.1) – MC220390 Fix
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December 18, 2025
Underwater Swim Fix Mod aims to fix an underwater swimming bug that was tracked in Minecraft’s MC-220390. When you’re swimming and hit an entity underwater while holding a sprint, vanilla Minecraft sometimes makes the server think you’re no longer swimming while the client still thinks you are, leading to frustrating behaviors like getting stuck in space when trying to pass through a small 1×1 tile. This mod eliminates that bug so underwater swimming works more smoothly.
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Features:
- Fixed bug MC-220390 related to the hitbox/swimming state when swimming underwater and hitting an entity while holding the sprint key.
Screenshots:










How to Install:
New to Minecraft? Follow our step-by-step guide to install Mods on your PC.View Guide
Underwater Swim Fix Mod Download Links
For All Versions from Minecraft 1.15.2 to Minecraft 1.21.11
Fabric version: Download from Server 1 – Download from Server 2
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