The search results display the date & time of the last edit in green under each search result (in green). With advanced search or the URL-parameters it's possible to change the order of the search results to be sorted by the date of article creation.
Users now might expect the date to show the date of article creation – since they asked for it to be the sorting criterion – but it's still the date of the last edit. This confuses users. (Report of a user)
We should show the creation date in those cases or make it more visible that the date is the timestamp of the last edit.