Consumable items in the off hand are used when taking an item from a shelf with an empty main hand

Steps to Reproduce:

1. Place any item in a Shelf

2. Put an item that is consumed upon use in your offhand, e.g. a Snowball

3. Right-click the Shelf to take the original item out with an empty hand

Observed Results:  

Offhand item is consumed when taking an item from a Shelf.

Expected Results:  

Item is taken from Shelf without the offhand item beind consumed.