Right after completing a tactical mission, I found that the geoscape is now frozen in time and I can't proceed. The game is still responsive, and I'm still able to issue orders to my interceptors, visit and manage my bases, but time has simply stopped and I can't figure out how to resume it.

Any help is appreciated. My experience with Xenonauts has been nothing but frustration so far, and this might very well be the proverbial last drop before I uninstall it for good.

Fixed by restarting the game.