This is the summary of the bug I am having.

What I expected to happen was...
Was for the crafting table to show me
the number of the tool a tool I thought
I didn't make.

What actually happened was...:
When I used the tool I forgot I had it
(Got lost in my inventory) so I when to
The crafting table before I made a new one
I checked the little number, it said 0 so I
made new one later I realized I had 2 or them.

Steps to Reproduce:
1. Make sure your inventory is empty, make a wooden pickaxe
2. At this point the number should say 1, break some blocks
3. Go back into the crafting menu.
4. Now the number should say 0
5 You found the bug! Celebrate or Crush it