If you edit both the name of the zone and the waypoints, the editor incorrectly labels the Window Title Bar as the previous zone name.
It does this even if you change the name and save the module. The names don’t correctly display in the title bar unless you close the module completely and reopen it in the editor. At that point, the correct zone name displays in the map waypoint editor window.
This is relatively minor bug and can be worked around, however it can lead to losing track of what you are editing…