Describe the bug

1. What did you expect to happen?
   Open the leather knapping GUI.
2. What actually happened instead (i.e. what was the bug)
   Right clicking the leather(s) does nothing.
   

To Reproduce
Attention to detail is important!

1. Right click leather.

Meta Info

• TFC Version: 1.2.1.144
  No other mods were present and can be replicated in creative with leather.

Except it's not. You need a knife in your inventory.