Thank you for your feedback. Currently, since you reach 250 pop, there isn't much content left—the rest is still under development. I will look into the bug you mentioned.
I'm really glad you enjoy my game. I'll keep developing it — adding space colonization and more mechanics that reduce the birth rate. I'm also working on improving the early-game experience. I'll let you know once the update is ready, and I hope you'll come back and give it another try then.