My door locks have just been replaced under this recall, but the rear (small) door has always seemed odd to me, because with the vehicle locked, pressing the button causes something in the door to click and the door moves slightly but won't actually  open (the movement is just enough to make me think it is no longer fully closed). This is very different to the front passenger doors on which, when locked, the buttons has no effect on the door whatsoever. 
I would have expected the rear door button when locked either not to move at all, or to spring in and out with no resistance at all, but it is as though it is still operating the first stage of the release mechanism.  I thought that perhaps the new locks would have change this behaviour but it hasn't.
Is this normal on the rear door, or should I be concerned?