When you /zone to a new zone of the same 'file' name, you see two of the same char in the /who list.
Example is tutorial_island_good, then zone to evil. do a /who all
After the empty zone shuts down, the dupe does go away. Not too critical right now.
Add to this that /who all still says "/who search results for [current_zone]" when using the 'all' switch. Shouldn't be saying the zone, though the results work fine. Just a display problem.