Describe problem (what you were doing; what happened; what should have happened):
As the title says, just shift-click stuff while in the CM GUI and if the input slot is full or a different item then the shift-clicked item will go into the output slots.
Minecraft Version: 1.20.1
Forge Version: 1.20.1-forge-47.1.76
Mod Version: 1.12.4
Single Player or Server: SP
Describe problem (what you were doing; what happened; what should have happened): As the title says, just shift-click stuff while in the CM GUI and if the input slot is full or a different item then the shift-clicked item will go into the output slots.