Growing together not working as it should. help

Mine was the same way and I read that it was the mod UI cheats. I went through my mod folder and saw I had an older version of UI cheats in another folder under my mods.  So I had the updated version and old version. Once I deleted the old version the milestones showed up and my simology panel was back to normal. Could be the same case for you. Just make sure if you have mods they are up to date,especially the UI cheats mod. Also that you don't mistakenly have more than one version.