I was crafting some stone slabs and noticed I only had one slot left in the stack. The rest of my inventory was filled. When I shift clicked on the slabs it used up the items. It then added 1 slab to the stack of 63 in my inventory. It couldn't have made a new stack because the rest of my inventory was full.
This works with any multi-crafted item and works on servers or single player worlds.
I have tested this glitch on the following items:
Slabs
Sticks
Iron (from iron blocks)
To recreate this simply:(using slabs)
Fill your inventory up with an item other then slabs
Put a stack of 63 slabs in your inventory
Attempt to craft 6 more slabs
Can confirm for 1.8.8 and 15w36d.
Steps to reproduce:
[media]1. Prepare your inventory as shown in
2. /gamemode 0
3. Open th crafting menu
[media]4. Take one of the diamond blocks and move it in the crafting field (
)
5. Shift-click the diamonds out of the crafting result.
6. You got 64 diamonds and 1 block (together 73 diamonds) insteast of 63 diamonds and 2 blocks (together 81 diamonds). So you just lost 8 diamonds.
To fix this either it should be checked before crafting if there is enough space in the inventory, or the items that are over should drop.