This is a testharness.js-based test. [FAIL] scrollingElement in quirks mode (body table) assert_equals: expected null but got Element node [FAIL] scrollingElement in quirks mode (root table) assert_equals: scrollingElement in quirks mode should be null if overflow of body and root element isn't visible. expected null but got Element node [FAIL] scrollingElement in quirks mode (root table, body table) assert_equals: expected null but got Element node Harness: the test ran to completion.