Playing as the Americans, I thought I had made a mistake when I accepted Arabia as a vassal--the oil I took from them didn't seem to count towards the UHV. Eventually I cancelled my deals with them, and suddenly the oil did count, and I won the game. So oil resources count when controlled by vassals, but not when they trade it to you. What is the intended behavior here?
(I can provide a save on request)
(I can provide a save on request)


. Playing as Byzantium, moved my War Galley close to Spain in Eastern Med. to explore and the next turn she disappeared without any message or notice. I am not in any war (only with independents) and even then there would be a message about units joining the enemy in the war of liberation.