Awesome, Best Exploit Ever !!!

So I found one of those artifacts that let me reset my fleet moves! Awesome. 100 turns later an alien race is one turn away from settling an extreme planet before me. Not a problem, my war fleet may be 15 hexes away and although they can only  move 10 hexes I have that cool artifact I can use to reset my fleet moves and destroy their unprotected transport and claim the planet. Yeah! Except no. That !@#$$% auto-end turn activates after I move my fleet and the colony is taken by an enemy. Game off. Not turning back on until next year. Seriously fix this stupid ERROR!