Chrome, WindowsXP.
If I click the text tool and then click around the map without typing, I leave behind little invisible lines of "textbox" which I can select and rotate and delete (but have not found a way to update) later.
If I actually type in my textbox, I get the words on the map, but nothing highlights when I select a box around the region to try and edit it later, or delete it.
Seems like the box should remain connected when it has something in it, and be discarded otherwise, and someone accidentally flipped the situation.