Duplication glitch

You can duplicate anything

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
Describe what happened here

Steps to Reproduce:
1. ... Put the item in the chest
2. ... Then take it back out
3. ...the walk around for ten sec. And hit the iPads home butten
4. ... Then dubble tap the iPads home butten and minus it
5. ... Then open the app again and select your world and it would have duplicated,!!!!!