walls not rebuilding in floor camera view

[Beakerr]

I started a simple shed project - had four walls, created two opposite walls as gable walls, on my way to doing a shed wall and then I generated a floor camera view inside the room. the gable walls did not rebuild up to the roof line, but the glass house perspective view shows that they did. not sure what I don't have turned on (or off) that is keeping the walls from rebuilding properly (I have "rebuild walls" ticked in the Build Rood dialogue box).  any help on settings would be appreciated!