Hi,

I can't seem to chisel metal and gemstone blocks, be it vanilla (iron, gold, diamond, emerald, lapis) or modded (aluminum, bronze, cobalt, copper, electrum...)
The chisel blocks variants appear in jei but don't have chisel recipes and indeed the blocks are not chiselable.
All are enabled in the config, clientside and serverside.

Having the same problem using current Modern Skyblock 2 modpack.
Chisel MC1.12-0.1.1.24

Can confirm. Chisel MC1.12-0.1.1.24, default configs. Minecraft 1.12.2 with Forge 14.23.1.2565. Whatever it is, it's also breaking Thermal Foundation's Forge Lexicon.

I've been watching Xisuma's FoolCraft series, and he mentioned this issue as well, and FC is in 1.10.2, so this likely affects all versions. I have a 1.10.2 instance set up, so I can test if needed.

Fixed via 2a448df