I recently bought the scenery and I'm currently slewing around a bit to check my Afcad. I came across a floating roof with no structure beneath. It's visible when looking at an angle, but if the eyepoint is at the same height, it looks as if it disappears.
I sighted it at the southwest corner of Terminal B. It seems to be missing only in Spot Plane view and Top-down though, the full structure appears in other views. So it's not a major issue, during regular flying I only use the Cockpit and Virtual Cockpit views.
