[Freeciv-Dev] (PR#4781) phantom units?

["Guest" <rt-guest@xxxxxxxxxxxxxx>]

Sometimes enemy units are visible, but aren't really there. That is, my
units can move through them even though I don't have an alliance or
whatisit with that player. When my unit is 'on top' of it, it does
appear in the sidebar like one of my own units would, I can't activate
it however. When I capture the city that supports it, the unit is listed
there, again unable to be activated. They are 'real' insofar that the
Goto function will not plan a route through them (annoying if they are
on a landbridge) and if the unit I request a Goto for is on top of such
a phantom unit, it fails for every destination.
I'm using CVS of 7-8-3 now, but this bug has been around for at least a
few months. It's not very often that it occurs, so I may not be able to
produce a savedgame for a while.