IC [MC1219]s Will Not Craft A Piston

**Versions**
CraftBook version: CraftBook version 3.10.3 and CraftBook version 3.10.4-SNAPSHOT;4700-609e3e4
Bukkit version: This server is running Paper version git-Paper-634 (MC: 1.16.5) (Implementing API version 1.16.5-R0.1-SNAPSHOT)

**Describe the bug**
Attempted to use the auto craft IC [mc1219]s to craft a piston. No piston was produced and resources weren't picked up by sign. On manual/pipe input items were added and distributed in dropper as expected however, no item was crafted.

**To Reproduce**
1. place a block and place a dropper on top of it
2. place chest on droppers face
3. insert 3 wood, 4 cobblestone, 1 iron, 1 redstone in the shape of a piston
4. add sign to block you placed with the second line containing "[mc1219]s"
5. Throw items in front of sign
6. auto crafter won't pick it up

**Expected behaviour**
Items were picked up off the floor and a piston was expected to be placed into the chest with items in the dropper consumed.

**Screenshots**
Test Setup

Dropper Config

**Additional context**
While messing with the recipe, a button was crafted however it consumed unrelated materials that were in the dropper at the time like cobblestone, redstone, iron. The autocrafter does work to produce iron blocks and levers however it will not produce pistons