Invisible users still show on "online page"

I noticed this earlier, that users still are displaying as normal, even if set as "invisible". http://beta.woltlab.com/index.php/UsersOnlineList/

Quote from Gandalf

He's probably just invisible to guests (?)

Oh, perhaps.. I didn't even think of that, guess I didn't think it was possible to appear invisible only to guests haha

I see it now, online to "registered users" .. not "everyone".. Thanks for pointing that out.