When I click "copy coordinates" I get them in degrees, minutes, and seconds. Often I would like to copy them to some application that wants them in decimal notation which means I have to translate them by hand to decimal notation. Reproducible: Always
You can tell Marble to use decimal notation in all GUI strings (including the copy action) in the preferences: Settings => Configure Marble, View tab, Angle => "Degree (decimal)". Feel free to open a new bug asking to make that setting the default one, that'd get my vote :-)