Dimensions displaying differently?

Why would two dimensions display differently, with one above the dimension line and the other centered on the dimension line?  I did them one after the other without exiting from Smart Dimension or making any changes.  The only difference I can see is that the justify boxes circled on the attached picture are not there when I click the other dimension.  By the way, nothing happens when I click on these boxes.

SolidworksDrawings And Detailing