Snow layers and Pistons

When a stacked snow layer is broken by a retracting piston, the snow layer drops as a single "stacked top snow" item, not individual top snow item(s).

What I expected:
Snow layers to drop as single items

What happened:
One snow layer with visual effect of all the snow layers.

Steps to reproduce:
1) Extend a sticky piston sideways.
2) Place an iron block on the head of the piston.
3) Place a block on top of the piston head.
4) Place 2-7 top snow blocks on the block.
5) Rapidly retract and extend piston head. I used redstone.
6) While doing this, break the block from step 3.
7) If the snow layer falls on the piston head while it retracts, it produces a glitches snow layer item.

Note: When placing this glitched item, it places a single snow layer.

The two images attacked show:
1) the setup I used
2) the glitched snow layer item in inventory

I am on version v0.16.2