[at-scroll-timeline-offset-invalidation.tentative.html]
  [Change first offset]
    expected: FAIL

  [Reassign first offset to sibling of scroller]
    expected: FAIL

  [Reassign second offset to sibling of scroller]
    expected: FAIL

  [Change second offset]
    expected: FAIL

  [Change both offsets]
    expected: FAIL

  [Offsets missing]
    expected: FAIL

  [Remove first offset]
    expected: FAIL

  [Remove second offset]
    expected: FAIL

  [Remove both offsets]
    expected: FAIL

  [Reassign both offsets to sibling of scroller]
    expected: FAIL