add -Dmixin.debug.export=true to the java args, re-launch minecraft load a save and send over .minecraft/.mixin.out/class/net/minecraft/class_2457

@SFort I can confirm it is caused by AlternateCurrent. I disabled that mod and colorful redstone working as intended.

There's a good possibility that Alternate current might be the culprit, so I would start with it if I were you.

Yeah it actually the cause, does the mod actually improving redstone as it claimed?

AC does improve redstone performance by quite a bit, but inherently it ends up bypassing the code that Fabrication patches. Supporting AC in Colorful Redstone would defeat a lot of the purpose of using AC in the first place, as checking for wool under redstone is pretty expensive.

AC does improve redstone performance by quite a bit, but inherently it ends up bypassing the code that Fabrication patches. Supporting AC in Colorful Redstone would defeat a lot of the purpose of using AC in the first place, as checking for wool under redstone is pretty expensive.

I see, thank you for the answer! Ok I decide disabling colorful redstone wool and install ChromaticCurrent and Wired Redstone to separate dust line. And keep using AC for regular redstone build, and use Fabrication for other awesome tweaks! It works with 400 mods++ currently used with carefully chosen configuration. :D

tested on 1.18 in dev env so i'm guessing this is a mod conflict

To be clear, we cannot fix a conflict if we have no idea what the cause is.
please find out what mods are causing the conflict, and report back

My mod list :

i'm not downloading ~250 mods.
you'll need to figure out what's actually causing this.
if you need an explanation on how to do that, you can reach me on unas matrix stuff

Wow, that's a lot of mods my dude! I would start by disabling every mod that could even remotely mess with redstone logic, that includes alternate current and wired redstone. By looking at your modlist There's a good possibility that Alternate current might be the culprit, so I would start with it if I were you.