It's not just that the saves are not showing, it's also not saving for me in 15.0.2. I loaded my save, did a few things in a few cities, went to Mistral Village and then went to the save menu. It looked like this.
View attachment 2116559
So i choose save, it says "do you wish to overwrite the current save" etc. So I press yes. Then I quit back to the main menu, reloaded my save (all saves do appear then normally) and i'm back again at the pyramid and everything I did wasn't saved.
So looking at my saves from the main menu everything looks fine, but when actually ingame, it's not saving nor showing my saves.
If you need my save file to find the source of the bug, lemme know!