For the first 10 minute I play this game I find it VERY slow, there's a decay between action select and action done. Then the move speed is also very slow.
You can replay it on a higher difficulty setting. If we'd allow replaying a campaign it would allow you to hoard a massive army and greatly unbalance the game. Expecially if you've got level 1 shooters in your army (undead, elves & elementals)
Hmm, I haven't seen a bug like this. Does it not close when you press Space?