Double tap to lock

Is this feature taken away or disappeared? I kept a separate small space just to double tap to lock, and probably after NOS 4.0, is it true?

It is still there. Press and hold the screen in your empty space to go to “home settings” then the “double tap to lock” is there as an option..

Kindly check again, it’s working Os 4.0 version. No changes happened. Thanks