search results page includes search results pages in list

When I search Launchpad for "gyachi" (https://launchpad.net/+search?field.text=gyachi&field.actions.search=Search), I see search results pages for that search, listed as search results. That is, the title of my search results page is (as expected) 'Pages matching "gyachi" in Launchpad', and that page contains entries for other pages with the same title, presumably from other searches for the same keyword.

Is this supposed to happen? Or should I report this as a bug in Launchpad?