Items disappear when dropped.

What I expected to happen was...:
Whenever you go to inventory, left/right-click an object then leave the inventory screen the object should be dropped.

What actually happened was...:
The item disappears.

Steps to Reproduce:
1.  Go to the inventory screen
2.  Left/right-click any object so it's "floating" 
3.  Exit inventory and the object disappears.