build_patched_glfw.sh

#!/bin/bash
#
# https://bugs.mojang.com/browse/MC-122477
# Replaces the extracted libglfw.so with this custom built one.
# How that can be done depends on your launcher.
# Minecraft version doesn't matter but GLFW version should match.
#
# How to find the version hash:
# 1. Locate the "natives-linux.jar" file for your Minecraft version.
#    e.g. .minecraft/libraries/org/lwjgl/lwjgl-glfw/3.3.3/lwjgl-glfw-3.3.3-natives-linux.jar
# 2. Looking for a file named "libglfw.so.git" in it.
# 3. This file should contain the hash.
#
set -xe

# GLFW for LWJGL 3.3.3: https://github.com/glfw/glfw/archive/3eaf1255b29fdf5c2895856c7be7d7185ef2b241.zip
wget 'https://github.com/glfw/glfw/archive/3eaf1255b29fdf5c2895856c7be7d7185ef2b241.zip'
unzip 3eaf1255b29fdf5c2895856c7be7d7185ef2b241.zip
mv glfw-3eaf1255b29fdf5c2895856c7be7d7185ef2b241 glfw

patch glfw/src/x11_window.c << 'EOF'
@@ -1130,6 +1130,8 @@
         keycode = event->xkey.keycode;
 
     filtered = XFilterEvent(event, None);
+    if (filtered)
+        return;
 
     if (_glfw.x11.randr.available)
     {
EOF

mkdir build
cmake -S glfw -B build\
 -D BUILD_SHARED_LIBS=YES\
 -D GLFW_BUILD_EXAMPLES=NO\
 -D GLFW_BUILD_TESTS=NO\
 -D GLFW_BUILD_DOCS=NO

cmake --build build

# Built file in build/src/, rename the libglfw.so.X.Y file to libglfw.so.

Fixed - thank you!

The issue is that the official launcher may re-extract and overwrites the native files everytime it launches the game. I use my homebrewed launcher so it isn't an issue for me. But I don't know how to make the official launcher (or any launcher you are using) work.

I made it read-only so it shouldn't overwrite it.

edit:
I was using Fabric 1.20.6, Kubuntu