That seems correct in theory but it is inconsistent between islands - I suspect it's to do with adminstrative levels differing between different nations. e.g.

That seems correct in theory but it is inconsistent between islands - I suspect it's to do with adminstrative levels differing between different nations. e.g. With the first example - Isle of Man - you won't see the same happen with either Great Britain or Ireland, nor with smaller adjacent islands. The labels font-sizes & zoom behaviour are also very different between Northern Ireland and Ireland - the UK having countries within a country and adding an extra admin level in the hierarchy. Isle of Man being a crown dependency could be a factor I guess, or something similar. Ultimately this seems fine to me though: representing areas locally for each locality is by definition inconsistent.