The feature request Order favorites by the date they were marked as favorite got implemented, and I used it to find questions most recently added to favorites.
But now there is something wrong with 'preferences' tab: you can sort preferences by 'recent', 'views', 'newest', 'votes': there is no 'latest' (it was here).
'recent' has "sort by recent activity" tooltip (title), 'views' has "sort by most viewed", 'votes' has "sort by highest votes"... and 'newest' has "sort by newest", which explains nothing. It looks like 'newest' sorts by the time question was asked, not when question was added as favorite.
This is a regression.
For example I remember that last question I marked as favorite was Are Mutexes needed in javascript? (nb. I don't see anywhare information about when question was marked as favorite), and in my profile page, when I choose ''newest' (there is no 'latest' as described in feature request for this feature) this question is neither first, nor last.