I've recently tried playing home-made civs using the Krynniac and Torian Tech Trees and was surprised to see that they don't have access to any of the Projects (Military Subsidaries, Research Project, etc.) This means that the game loops on "Idle Colony" (because you can't skip it) when you run out of tiles to build on a planet. The only way around it is to either build-destroy-rebuild or queue a building, but cancel it before it finishes. Somehow, I don't think the AI is designed to handle something like this.
Can anyone tell me if this is a known bug?