TIN Cities filter broken

I agree the logic around the “City” icon is not clear. It looks like a decision of the devs to add for some only but I don’t think it is based on if the city is TIN or not.
For example, on my world map I can see Paris & Amsterdam but not London. For London do you have a 3rd party scenery maybe ?

Yes, it would be a nice option. There is an existing wish where you already contributed: