hadw
3
In most cases it is simply that, at that scale, there is not enough room to fit them in. In the case of Norway, there are two disjoint parts of the country and their renderer seems to pick https://www.openstreetmap.org/relation/5856703 as the place to plant the label, possibly because being far North, it looks bigger than it is.
In any case, there is a principle of not tagging for the renderer, so the only place to fix this behaviour is in the Transport Map’s render, not in the actual data.
Incidentally, it is possible to edit all this data (even with iD), but a newbie should not try to so, especially for well known country names. Either they will not have analysed the problem correctly, or the lack of the name will be the result of vandalism or a newbie edit and the data is likely to be reverted to its correct form, with all the detail, quite soon.