Didn't mean to suggest it was. MM-DD was, as I read the changelog, the old, ambiguous behavior.

My suggestion is equally unambiguous and more consistent with ISO. It inherits the ISO's advantages of non-language-dependence and international recognition.

It's offered simply as that: a suggestion for an alternative to be considered as potentially superior. Sorry if it sounded like I was saying the current fix doesn't do what it's intended to.