True. To get back to the app, you have to double tap, but double tap + swipe down + tap on the cover. It can be very annoying at some point. And there are plenty of situations where it can happen, not only reading blogs. Today I ended up setting the lock time to 10 min temporarily, I was so fed up with that gesture combination of double tap + swipe + tap just to return to the application I was in. A design idea could be to allow double tap + side swipe from the lock screen to return to the last app, as on Harmattan. Swipe down would still be possible to show the homescreen. Currently the lockscreen sideswipe is used for favorite ambiences, which are already accessible from homescreen sideswipes, and admittedly could be accessible from elsewhere so that sideswipes could be used for more critical features.