The Recent Posts widget adds (as you might guess) a list of the most recent posts to a menu. Unlike the Custom Menu widget (another WP standard widget), the Recent Posts widget does not add the current_menu_item class when a post is selected (being displayed).
This seems like a major oversight, am I missing something? If not, does anyone know of a third party widget that lists the most recent posts and includes the current_menu_item class (or equivalent)? ...or perhaps some magical hack to active the result of adding a class to the active list item?