Reported in OTRS: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom;TicketID=9741176
With T67760: site.editpage may have Parameter 'md5', our robots.txt should disallow search engines to index subpages of the articles for deletion. However, recently it seems, that the pages are indexed as:
https://en.wikipedia.org/wiki/Wikipedia%3AArticles_for_deletion%2FDetensor_Therapy
The robots.txt entry just disallows subpages with a slash (/) not with the urlencoded form.
See (example):
https://www.google.de/?gws_rd=ssl#q=inurl:Articles_for_Deletion%2F+site:en.wikipedia.org