[Bug] Bookcase items appear on Second Floor

First time I see this happen. I clicked two bookcases next to the stairs. Both bookcases released one Scroll of Identify. These two items appeared on the second floor above the bookcases instead of on the floor in front of the bookcases.

I had to go upstairs to grab them.

Image: http://www.blizzplanet.com/wp-content/uploads/d3-beta-bug-bookcases.jpg