Issue description:

I shift click on an item and it gets in the system. And it doesn't leave my inventory.

What happens:

Item duplication.

What you expected to happen:

Item getting stored.

Steps to reproduce:

1. I don't know
2. I was streaming so it's recorded
3. Here is the timecode when it happened: https://www.twitch.tv/videos/621257093?t=07h37m18s
   Before that i've shift-rightclicked it in the air trying it for the uncraftability.

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

• Minecraft: 1.12.2
• Forge: 14.23.5.2854
• Refined Storage: 1.6.16

This issue does occur on a server. It's hosted by me so that's no connection issue.

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

https://pastebin.com/GtpzeztU