Warhammer 40k: Dawn of War 2
The same thing happened with DoW: Soulstorm too... Ended up quitting the game midway. Please let me know if there's any way to turn this off... I want to buy Chaos Rising, but don't want to waste my money on it if I can't disable this annoying issue, thus not finishing the game (again)
Tyranids however, there is no way.