screenshot or it didn't happen...

Next time, it will help the developers with a savegame, you can share these using www.dropbox.com

Besides showing the immediate problem more clearly, saves also contains logs of what happened.
If you got the patience, you might also add a quick screenshot to highlight the problem,
and the debug.err file which refreshes each time you start a new game (so you have to copy it at the right time), https://forums.elementalgame.com/415301
And posting it on the support forum will put it forward on the list of SD dev attention - https://forums.elementalgame.com/forum/1007

This reply is from a non-stardock member, to help you make a better and more detailed bug report next time, to fix the issues in the game! Sorry if I come off as rude, and I mean it in the best intentions.

Sincerely
~ Kongdej