Space Classes in 2011 Auto-Classing?

[M5d]

Just started with 2011 and I'm having trouble with the classing options in the new space tool.

It's not listed as an auto-classing object in help but its main class obviously is, which is fine.

Space sub-classes, which appear to be and need to be customisable are behaving oddly though.

-2D Attributes switches back to Space-Main (the space object auto-class) whenever changed.

-Space Labels can be classed and the class setting remains in the OIP but space labels are only visible and switchable with the Space-Spec class regardless of their class setting in the OIP.

-3D Attributes like the Space Labels class can be set and remains set in the OIP but the objects are only visible and switchable with the Space-Patterns class.

This means all space labels / objects are either no or off in viewports and cannot have their visibility differentiated by using their class options in the OIP.

Is this a bug or is there a nuance I've missed in the new Space tool?