Confirmation

• I have read the wiki

Bug description

ConcurrentModificationException in onKeyInput handler

Minecraft version

1.20.4

Mod/Plugin version

1.20.4-2.5.5

Mod/Plugin loader and version

NeoForge 20.4.198

Steps to reproduce

It's intermittent and not reproducible

Expected behavior

No response

Log files

https://gist.github.com/shartte/929d87ea2e4d00e058a0c3a7905fe58c

Screenshots

No response

Does that issue happen when doing anything specific?

I launched the instance from the Vanilla launcher and let it launch in the background while doing other stuff in the foreground.
The launcher then presented me with a crash report, so this must have been while it was still in the main menu and while it was producing key events from things I was doing in other windows.
That however makes it hard to pin down what exactly I pressed.

Ok, that's at least something I can work with that. I'll try to reproduce it.

I didn't manage to reproduce the issue, but I'm pretty sure that fixes it.

Yes that would probably do it, but I have no idea how this is possible either.

The only thing I could find is that you are registering the ClothConfig tick callback twice in NeoForge.
Once in initializeClient and once in clientSetup itself.
But that on its own will not cause this 🤔

It's certainly possible that some other mod interfered here, but reproducing this after the fact is likely impossible. :-(