[MC-5726] Sticky pistons do not retract a block which they have pushed when given a short pulse

Resolution note

[Mojang] Jeb (Jens Bergensten) resolved this report as "Works As Intended". He also commented roughly one year later as response to the following:

Panda4994 (source):

I always viewed the breaking of the sticky piston connection as inertia, and taking away the block teleportation part, I don't think this behaviour is buggy at all.

Jeb (source):

The reason why the piston behavior "technically a bug" is because the block in front of the sticky piston is supposed to act as if fixated to the piston. Your interpretation as "it's inertia" actually makes sense.

The bug

When a sticky piston is powered with a very short pulse ("0-tick pulse"), it will push the block, but not retract it.

To reproduce

Build the contraption in this screenshot:

The redstone block will not be pulled back.

After 1.14, it is also possible to reproduce this by placing a button on the side of a sticky piston, and press the button to move a block.