Documented behaviour never needs to be corrected

I disagree, at least partly. Most modules on CPAN have a "BUGS" section in their POD for a reason - it doesn't mean it's never going to be corrected, it just means the bug is known. Depending on whether it is feasible to fix (and this one certainly is), how hard it is to do, and what priorities there are, it will be fixed sooner or later. In the meantime, users should be aware of the problem.