(Seems not reproducible via UI anymore, but now/still via the API).
Situation: an edit is made that would normally show up in the patrollable list (e.g. go to Recent changes, then click Hide patrolled edits).
After the page it was made on is deleted, the edit remains unpatrolled and in the list. There is no way to patrol this edit now, nor see the change (not an issue for this problem, but a separate issue nonetheless).
There should be a way to patrol edits from either the recent changes list, or to patrol edits on a deleted page. Or patrollable edits that get deleted should be automatically marked as patrolled (not good if you undelete the page and MediaWiki would have had it marked as unpatrolled - not sure if this behavior occurs).