I've noticed my friend's short upright ear male is half a day younger than his short upright ear female.
Both have been coaxed within 3 seconds of each other and have been together their whole life.

http://www.worldofmeeroos.com/meeroos/meeroo/1037037
http://www.worldofmeeroos.com/meeroos/meeroo/1486572

The same happened with the female's parents, who have been my roos. They still show as "being raised", too, even though I released them. Ever since, the age difference has not been showing on their websites anymore.

No idea if this is important, or if both problems are related somehow, but I thought I'd report it anyways.

Cheers,
Corvus