If a new member has not confirmed their e-mail address, they show as “greyed out” in the logs, and they have no profile page.
But they do show up in search results (for ordinary members as well as mods):
And if you click the link to the non-existent page for uncofnirmed, you get a blank page - no error message or anything - so it’s unclear whether the page doesn’t exist or simply hasn’t loaded correctly. (I suspect that technically the page does exist - it just has no content. In which case some kind of interim message on it might be useful.)
(Using u to return from the blank page also doesn’t work correctly; it loads the new URL in the address bar, but the page doesn’t load without pressing F5. Affects Chromium and Firefox.)
Username stripped out and replaced with “unconfirmed”.