From the CW3 main menu:
Click on "Colonial Space".
Click on "Details" for any map.
Click on "Scores".
At the top of the screen will be a very wide button that says in red text:
"Return to Map List"
Clicking on this button does not take me to the map list. Instead, it takes me back to the details for the map.
I would suggest that the button be renamed to "Details", or fixed to actually take you back to the map list.
Obviously, this is not an urgent issue. I am running version 2.12 Steam.