One of the things I love about being a Neutral Civilization is getting all planetary improvement tiles upgraded instantly after researching Xeno Ethics. Upgrading planetary improvement tiles does is not just limited to the planets you currently own, but also to the planets you receive later in the game, from colonization, military takeover, or cultural domination. A rare event happened to me in one of my games, some volcanoes changed a planet into a habitable one, and I was chosen to colonize the planet. Except, this time, the planetary improvement tiles were not upgraded, and I would have to reserach those techs to upgrade them. By this time in the game, I wouldnt be able to completely fill the planet with social projects, but, nevertheless, it is still a bug, albeit rare, should deserve some attention.
