This might be a feature that the Mazda infotainment system is incapable of due to hardware limitations, but the navigation stops when leaving the app. When the Mazda is not connected to the internet, rerouting/restarting the navigation is not possible after returning to the app, therefore routing cannot be continued until you reach a cached location/connect to internet.
This might be a feature that the Mazda infotainment system is incapable of due to hardware limitations, but the navigation stops when leaving the app. When the Mazda is not connected to the internet, rerouting/restarting the navigation is not possible after returning to the app, therefore routing cannot be continued until you reach a cached location/connect to internet.