Bug or me?

Added a plane and when i went into wireframe mode, it “disappeared” I couldn’t see it and can only see the plane in edit mode or shaded view. So can you all help me take a look at the file and see if it’s just me or really a bug. If its a bug, I would submit to the bugtracker or something later on. Thx.
http://www.asknlearn.com/personal/S9026140A/bug.blend

The viewport features automatic edge removal for faster drawing. It seems to mark all edges of your plane “removable” because your plane has an odd topology. If you press “Slower Drawing” in the Edit Context several times your wire becomes visible.

But why don’t you just use the primitive plane? It is always displayed correctly.