No way to save location in two latest Fedora (versions 29&30)
Fresh install of Fedora 29. I click the date/time located in the center of the top menu and see "Add world clocks..." and under that "". Neither of these widgets remember what I choose. Maybe this is user error but clicking my local world clock shows sunrise/sunset, but there is no indication of how to set it as the default. When I click away nothing is remembered and the notifications drop-down again says "Add world clocks..."
I have the identical experience with the Weather widget. When I click "Select a location..." it does indeed show my location with weather forecasts, but again there is no method to save my default and when I click away and open Notifications again I need to click "Select a location..." each time I want to view my local weather.
What I expect to happen: Either the widgets use my determined location (if I've elected to share it - which I have) or they ask me to select a location, and they make that the default. Then each time I open the notifications pane I expect to see the currently selected world clock as well as weather for my default location.
I did perform an upgrade to Fedora 30 and these two apps act just as described above.