@TheDJ Thanks for your reply. It would be nice to see this issue fixed, because it creates inaccurate maps. And the inverse maps are just as "messy" as the non-inverse maps which have the same shapes.

If there was a reason for this behavior to be implemented, does that mean it is not a bug but a feature? If that is the case, where can a suggestion be made to change that policy? Look at http://en.wikipedia.org/wiki/San_Antonio for example; that city has multiple holes, but they are not showing up in the map. The issue with a decision like this is that it favors aesthetically pleasing maps over accuracy. The map incorrectly suggests that San Antonio has no holes within its city limits, but that is not the case. If this is a bug and not a feature, are there any plans to fix it?