I was playing a medium sized map, things were going alright (turn about 110, hardest difficulty) when suddenly the Alterians got a 6 or so tile boost to their influence in 1 turn. Ok, no biggie...
About 5 turn after that the Iridium instantly controlled the entire map in influence, and I didn't even know where they were. I 'fow' and saw that they only had 3 planets (not even their homeworld by the looks of it!)... Next turn I started losing colonies. When I reload the same thing happens, and the influence will sometimes readjust itself into 50/50 Alterians and Iridium down the middle of the map.
Anyone else have this issue? I'm just hoping someone forgot to carry the 1 or something, because this makes no sense 
edit; games running really smoothly overall though, gj on that 