the game waits a few turns (I think 15) before checking for victory conditions - if you start without another player that will be conquest. So this is no bug in itself. How do you start a game and end up with no other players without knowing this beforehand?
Can you rephrase that question? not sure I understand what you mean.
Edit: New bug. If a random event occurs that involves two civs, (such as the collapsed politically arranged marrage thing) and you don't know one civ it still shows both names.