The following layout test is flaky on GTK: js/cached-window-properties.html The test has been flaky on the bots since introduced at r168914 <http://trac.webkit.org/changeset/168914>
I checked this test because of WPE, it's actually just a bit slow but passes always, also in the GTK+ port. Updated in http://trac.webkit.org/changeset/217600.
its randomly timing out on the GTK EWS queue.. i'm changing the expectation back to [ timeout pass ] instead of [ slow ]