[1.02] Loss by conquest bug?
I had one where I was plodding along on my own, having a few cities on a large map, 5 AI players, only just met them.
I was just about to start producing my first units when suddenly... I heard a crashing noise and for a second it appeared as if my capital city disappeared... then a very strange cut scene happened where a camera was hovering over a map, which then abruptly faded to black without explanation... and a popup told me "loss by conquest".
What? How?
My Sovereign was just outside my capital, with no enemy units in sight. I wasn't even at war with anyone?