Tested on 1.26wmf13 wikis pl.wiktionary.org and test.wikipedia.org. Steps to reproduce:

1. Create a new page on any of the recently updated projects
2. Navigate to Special:Recent changes and check that your edit is *not* marked as new with N (see meta:Help:Enhanced recent changes)
3. Edit that same page again
4. Go back to the Recent changes special page, now you should see the N mark beside the group arrow

In short, single edit logs don't show any marks at all (I have observed this behavior with N, m, b and the patrol mark !). However, they will appear as usual when multiple edits are made.