I tried this is my game, and everything worked fine, and the project placed itself ahead on the cue perfectly.
Are you talking about those special projects "Economic Stimulus", "Research Project", "Cultural Festival", and "Birthing Subsidies? These do not create buildings or ships. I have tried "Economic Stimulus" and it increases the empire's economy as long as any colony is working on that project, and the project has no production time limit -- which I would expect to be true of the other projects for their appropriate aids to your empire. With the way build 2 is working, only one of these special projects can be in a colony's queue at a time, and it can only be the last project in the queue. If you add a ship or building to a queue which already has one of these special projects in it the ship or building automatically gets put ahead of the special project. And a ship or building placed on the queue will show how many turns are left to complete it while these special projects always show NA for time left. You can see these special projects when you click the "PROJECTS" button at the top of the "available projects list".
