The "Inception" Xbox achievement requires to "Push a piston with a piston, then pull the original piston with that piston."
I've done this multiple times on my iPhone 6 and on my PC. Neither version seems to be unlocking. I had friends with this very same version. Been reading on different places and other people seem to have this same issue with this achievement.

UPDATE by MissMarzenia
This bug has been reported to our internal bug tracker for further testing and a fix. It is scheduled to be fixed in one of the future updates (no specific date can be provided).
Please, avoid duplicated comments. Post only NEW information regarding this bug.