Several times I was put in the edit confilct view while there could be no conflict f.e. last edit by myself or other hours, days or even years ago.
One last example in this edit: https://el.wikipedia.org/w/index.php?title=%CE%A0%CF%81%CF%8C%CF%84%CF%85%CF%80%CE%BF:%CE%A3%CE%B3%CE%B4/%CF%80%CF%81%CE%BF%CE%B5%CF%84%CE%BF%CE%B9%CE%BC%CE%B1%CF%83%CE%AF%CE%B1&diff=prev&oldid=7574227&diffmode=source
(see the screenshot)
Last edit in 2014.