Applies to all variants.

Yes, and this issue is the same with Coal Blocks

Will note that charcoal blocks at least, cannot be turned back into Charcoal as well. Hope real life allows the devs to fix this sometime in the near future.

Thanks, btw, to all the devs/admins for your time.

(And sadly, setting a burn time on them via craftweaker doesn't seem to fix the issue.)

@dragonpaw Actually it does ;)

@Snownee Hmm... I used furnace.setFuel(<chisel:block_charcoal2:1>, 16000); and the only effect it had was allowing me to insert the item into some modded furnaces, but it never burned and didn't show a burn time in my tool tips. What script did you use?

@dragonpaw

furnace.setFuel(<chisel:block_charcoal:*>, 16000);
furnace.setFuel(<chisel:block_charcoal1:*>, 16000);
furnace.setFuel(<chisel:block_charcoal2:*>, 16000);

@Snownee
Maybe it doesn't work with a server, as the one you listed doesn't seem to work for me. Despite it clearly loading:

[INITIALIZATION][SERVER][INFO] [crafttweaker | SIDE_SERVER]: Loading Script: {[0:crafttweaker]: ash.zs}
[INITIALIZATION][SERVER][INFO] Setting fuel for <chisel:block_charcoal:*>
[INITIALIZATION][SERVER][INFO] Setting fuel for <chisel:block_charcoal1:*>
[INITIALIZATION][SERVER][INFO] Setting fuel for <chisel:block_charcoal2:*>

Seems to be fine now