Sticky piston doesn’t pull other sticky piston

When I made a trap earlier I made it so the pistons would extend and grab each other and pull them into the hole, but however it didn’t pull the piston back.

Steps to reproduce:

1. Place a sticky piston
2. Place a sticky piston in range to grab from the other
3. Power both pistons

Expected Results:

Piston pulls other piston back with it

Observed Results:Piston retracts and doesn’t pull

They do have to face to same way, or it will pull it.

Video Link: https://onedrive.live.com/?cid=80C33DBC970E9378&id=80C33DBC970E9378%21scd9d716a9345418997a215105c9e3cfe&parId=root&o=OneUp