Launching Units in Simultaneous Games

Has anyone found how to correctly launch units in simultaneous games?

In a test I just made I gave the order to launch 100 drones from a planet containing 97 (or 98 not sure now), and it only launched 21.
When the next turn I cleared the planet orders and re-ordered to launch the remaining drones, after processing the turn it gave me the "empty system" bug and the game then crashed.

I've just started some PBW games, and I really hope there is some workaround for this!