WPT test http://wpt.live/css/css-flexbox/percentage-heights-003.html was added to WPT after the discussion in W3C CSS Issue 1679 <https://github.com/w3c/csswg-drafts/issues/1679> See here the spec changes: https://drafts.csswg.org/css-flexbox/#change-2016-definite-basis WebKit its failing 3 sub-tests in this test.
*** This bug has been marked as a duplicate of bug 212264 ***