Weather widget map problem

In my garmin I have 4 maps. When at start I choose for example Mountain Bike activity where I have set default garmin TopoActive maps and then go to weather widget and next scroll to the map I see TopoActive map but..

When at first I choose activity without map settings for example Gym Activity and then go to weather widget, the map change at one of the installed map (always the same map).

What are the default guidelines for which weather map are selected? Is it name, size of the map or something else?

Because I can’t choose specific map in weather widget option.