https://paste.ofcode.org/tAbyycT8KmAJiG3ZJeWfzh
When rubidium is installed, and a malum sign is rendered, the game crashes. Not sure why.
All the relevant code is here:
https://github.com/LodestarMC/Lodestone/blob/Name-Change/src/main/java/team/lodestar/lodestone/systems/blockentity/LodestoneSignBlockEntity.java
https://github.com/LodestarMC/Lodestone/tree/Name-Change/src/main/java/team/lodestar/lodestone/systems/block/sign

The same happens when torches are placed

I realized this issue isn't actually tied to rubidium, at the very least signs crash even without rubidium installed. I actually realized this before I submitted the report, and intended to not submit it, but apparently it did submit.
Still, I'd like some help.