the version i am running on is
WOOT: 1.3.0
Forge: 14.23.4.2705

get 1 nether star then get vanilla anvil and rename it to whatever then
attempt to make the nether star shard it will duplicate the nether star shard and it will not get rid of nether star

Updated information this happens on all shards

Thanks you very much

I'm probably using two different methods to compare items during the "what items are in range for crafting" and "remove the consumed items".

I'll take a look and see if I can patch out the exploit.

So after looking at the code.

RecipeMatcher
Items are the same and damage is the same (NBT not checked)

Removing Used Items
Items are the same and damage is the same and NBT is the same

I'll update to ignore NBT matching when removing. That should not cause any other issues, as none of the ingredients care about NBT anyway.