See the original bug https://bugs.webkit.org/show_bug.cgi?id=74533 for details
I skipped it on Qt to paint the bot green: http://trac.webkit.org/changeset/102938
Please unskip it if you land a fix. Thanks.
*** This bug has been marked as a duplicate of bug 74555 ***
Original patch has been rolled out.
Removed the skipped test in r102964