The Colossus, as it is supposed to, did not go obsolete with Astronomy for some reason.

Well I'm not complaining; in my last game, I still got all the bonuses from the Colossus and was doing fine financially thanks to that, even when I was making mech. infantry, but it sure creates a balance issue.

It happened when I traded the Astronomy tech and passed the turn far too quickly. I didn't research it. I received it together with some other tech and some :gold:, for a single tech.

I tried to recreate the same thing with the Great Library. I traded in Scientific Method, but the wonder did go obsolete as expected, unlike the Colossus on Astronomy.

Can anyone try to recreate the bug?


EDIT: When I loaded a savegame, the problem was gone for some reason. Weird.

Thanks.