Items don't slide on Ice when pushed by A piston.

Steps to reproduce:
1. Drop items,Place an Armour stand, Mob or Boat on top of Packed Ice
Or Blue Ice
2. Then push it with a piston

Obversed Results:
1. Piston extends, everything moves one block

Expected Results:
1. When the piston extends Mobs, Armour Stands, Boats, and dropped Items slide on top of ice.

Reasons:
1.Parity
2. Sorting systems without water
3. Transporting Mobs
4. Fun with Armour Stands

Conclusion:
Items ignore ice when pushed by a piston. It's as if the piston picks up the Item and moves it a block rather than actually pushing it.