Minecraft Username:
Uplandstatue

Brief Description:
In the mining world my owned pickaxe had roughly 1/3rd durability left, the meter was still in the yellow, when it disappeared.

Instructions:
Simply mining.

How many times did you recreate this?:
Only had my owned/enchanted pickaxe do this.

Result:
Pickaxe disappearing as if broken.

 

Bummer, thanks for the reply though.