Edit a page with user1.
Edit the same page with user2.

The recently-updated macro will then show two entries for this page - one for each edit.

This seems counter-intuitive. If a page has been updated recently, it should only be shown once, regardless of how many edits it has been through. Otherwise, the macro risks simply showing several edits of a single popular page, at the expense of showing other updated content.

Also, if the same user edits the page twice, then it will only be shown once.

This is also different from the behaviour of the macro in 2.10.