In other words, it is showing information (names and birth years) to the general public for living people, when that information should be private.
FYI: For my tree, I have setup a custom privacy level, and the only thing that I allow non-members is to view "Deceased Relatives". But the general public can still see this information, regardless of the setup preferences.
This seems to be a serious bug (since it deals with personal information for living people). Please have the developers please fix this ASAP.
And there is already a field that indicates whether a person is alive or not. All they would have to do is filter using that field.