I've had that problem with finishing my turn as well. I haven't been able to pinpoint the conditions under which it happens, though.
[By the way, totally getting the game this month. Limited funds and whatnot, sorry I haven't before now. Speaking of which, I'll see if one of the old bugs that carried over from the TRPG2 engine into the TSoG engine for the demo managed to stick around and make it into the full version when I get it.]