I am not sure if this is a bug, intended operation, or something else.

I have noticed that when viewing reservations, all of the segments show the OnePass Mile/Elite Qualification for the individual segment. However only some of them display Total Miles in Bold Print.

Is this intended, if so why do the other segments not display the total miles?

I checked a flight search and none of the results display Total Miles, it seems the feature is only seen from the View Reservations screen in My Account.