Bug: World XZ not simplified to text

Hi David,

The World Plane components are not behaving consistently. I would like the XZ plane component to say World XZ in text so that I can get the string for "XZ" for use later. Is this a Bug?

I've got a definition that needs to identify the plane that each planar curve is on. Where it is a simple World plane. Then all I need is the string "XY" for example.

So far my definition fits planes through edit points and then goes through a process of identifying "regular" Axes and Normals to pick the relevant World Plane. But it falls down because of the results shown in the image below. Is this fixable?  

EDIT: I can do it by simply having a text item as well as a plane, but it would be cleaner to not have both.