Fill command fails to remove carpet when both carpet and supporting block are replaced with 'Air'.

SETUP:

There is a given area with a layer/single block of carpet ontop of a full block/blocks.

PLAYER ACTION:

The user inputs the '/fill' command to remove both the carpet and the supporting block located directly below said carpet.

 

EXPECTATION (INTENDED RESULT):

Both the Carpet and the supporting block are removed from the world.

ACTUAL RESULTS:

The specified area is 'filled' with air. The supporting blocks are removed/replaced. The Carpet is 'broken' and drops their 'item form'.

TO REPRODUCE:
#1: Load a MC World
#2: Locate a 'flat area'
#3: Place carpet over said flat area.
#4: Using the 'fill' command, specify the CORNERS of the carpet area, as well as the block directly BELOW the carpet area. (The fill command will be replacing a minimum of 2 layers)
#5: Run command
#6: Note results.

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