wxDemo wxTreeCtrl demo

Good evening:

I'm playing with a TreeCtrl sample and I noticed something in my code and
in the wxDemo code.

Run the wxDemo TreeCtrl demo
   Select some node
      Background changes to red(selected)
   Rename the node
      Background stays red
   Deselect All
      Background returns to original color(deselected)
   Rename again(on an unselected(?) node)

The last selected node renames!

Expected a MessageBox "Must select an item, first!"

Is Deselect All not working even though the background color is changing?

Thanks,
James