Hello everybody,
I am a proud owner of a boxed version of this game, but replaying it a couple of years ago I've realized that there is a (known, apparently) limit to the number of units that can be displayed on the map: if your city gets too bit (around 20k citizens) units will start disappearing randomly, as there are too many at once on the screen.

My question is: has this problem been solved in the GOG version of the game? Or it is simply a direct re-release of the original game? I would buy the game again if the problem is not there anymore!

Thanks!

The sprites limit will still be present. The game was simply re-released with compatibility for newer operating systems, the core wasn't changed in any way.