Issue description:

I duplicated elytra with quark dragon scale and game doesn't like it

What happens:

The elytra is crafted, and I place it into RS system, it shows the elytra inside system. Exit crafting grid and reenter it, elytras that were crafted are gone

What you expected to happen:

The elytras stay

Steps to reproduce:

1. craft elytra with quark dragon scale
2. close grid
   3.open grid
   ...

Version (make sure you are on the latest version before reporting):

• Minecraft: 1.12.2
• Forge:
• Refined Storage: 1.6.16

Does this issue occur on a server? yes

If a (crash)log is relevant for this issue, link it here:

https://www.youtube.com/watch?v=zSPCiIWjmSo

https://www.youtube.com/watch?v=scJrJVYvruE

👋 @NotSlonkey, we no longer support this version of Minecraft. Please see https://refinedmods.com/refined-storage/wiki/minecraft-version-support.html