Item frames (and items within) when removed from a ceiling, drop atop, not under, the block

The Bug

When I place an item frame on the ceiling, and an item in there, and then attempt to remove the item and the frame, both drop on top of the roof, instead of coming down from the ceiling. The roof/ceiling is one birch planks thick.

Steps to Reproduce

• Build the setup as shown in the attachment below. setup.png
• Switch into survival mode and destroy the item frame.
• Take note as to whether or not the item frame is dropped above the diamond blocks or below them.

Observed Behavior

Destroying item frames and contents within them that are attached to ceilings drops the items above blocks.

Expected Behavior

Destroying item frames and contents within them that are attached to ceilings would drop the items below blocks.