On the Enduro 3 (firmware version 13.37), when entering a specific activity mode such as “Trail Run”, and navigating to Map Settings > Layer Settings, any changes made (e.g., enabling or disabling certain map layers) are not saved.
After going back to the previous menu and re-entering the layer settings, the selections revert to the previous state. Additionally, Garmin Connect displays a message saying the settings cannot be changed and should be configured via the phone instead.