In the game, I encountered the following issue:

1. While playing normally, I suddenly lost the ability to control the camera/view.
2. The mouse works fine when switching to other windows.
3. Switching back to the Minecraft window temporarily restores normal controls.
4. After a brief period of normal operation (less than 5 seconds), the game crashes.

I'm not certain whether this issue is related to ImmediatelyFast, but after removing ImmediatelyFast, the crash has not reoccurred so far.

The crash appears to be associated with an illegal access exception in a GLFW native function. Below are the JVM crash logs from the two incidents.

hs_err_pid8428.log
hs_err_pid17884.log

latest.log

Environment Information:

• JVM: GraalVM 25
• Minecraft: 1.21.8
• Fabric Loader: 0.17.2
• ImmediatelyFast: 1.12.1
• System: Windows 10

I am not sure if this is ImmediatelyFast related. ImmediatelyFast doesn't mess with GLFW and the crash doesn't indicate anything useful either. This is the first report of this issue, so it either isn't ImmediatelyFast related, or only affects an insanely small subgroup of players. I can leave the issue open for the time being, but as long as its not properly reproduceable I can't do much about it.

We have identified the cause of the issue: pressing AMD's "Toggle Fullscreen" hotkey in-game (when Sodium is installed) can occasionally cause the JVM to crash.

The crash is unrelated to ImmediatelyFast.