example of bug
The UI presents a link to patrol a deleted page. Trying to do so results in an error, so the link should not be presented. An example of this can be seen at the above url and in the image attachment. See also [[Wikipedia:Village pump (technical)#New-page-patrolled edit oddity]] (<a href="http://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_%28technical%29&oldid=174527337#New-page-patrolled edit oddity">permanent link</a>.