Unfortunately, due to the state of our bots, I am not certain when this started.
Added expected failing results to get the bots green in http://trac.webkit.org/changeset/111031
Also see https://bugs.webkit.org/show_bug.cgi?id=81375.
Someone who has access to Lion should really investigate all these auto-correction test failures. Since this feature is only available on Lion, tests failing on Lion indicates we're not passing anywhere; i.e. not test coverage.
Also see the bug 81372.