I can't remember if we changed how this works recently or not or ever. I'll try to confirm or deny by ingame info.Now I wonder, do all effects of the courthouses start while you still doesn't have its prereq tech? Also, do all cities get them? Even those that aren't 6 sized yet?
You wouldn't have looked into it because it's a Mesopotamianism state religion wonder.Tbrd has completed a wonder that I hadn't checked before.