Something of note in the new update:
if 2 nations are remaining, and one puppets the other, and the puppet nation has low gold yet a high number of cities, then the puppet may go bankcorrupt, making it unable to rebel, with the gold cost of being a puppet higher than they could possibly afford, so the match slowly continues, with the puppet never fighting back due to being in an absurd amount of debt, and the puppeteer taking the puppet city by city often nearly as long as the game thus far, this is not a very interesting conclusion to a game
Not sure if this is a bug or intended, feels like a bug