Cannot snap to Parametric solid "through" filled shape

CE15.2

For years I've been annoyed that on occasion snaps didn't work but I could not figure out what the cause was.  If a filled shape exists in 3D space above a element in CE and you attempt to snap to the element snaps will not work even in wire-frame.  Under users>preferences>input> Locate interiors is set to never.  Is this intentional or an oversite??  Attached file for others to try maybe it's just me?

cannot_snap.dgn

-Grant