[OpaqueRange-highlight.html]
  [OpaqueRange can be added to and deleted from a Highlight (input)]
    expected: FAIL

  [OpaqueRange mixed with DOM Range in same Highlight (input)]
    expected: FAIL

  [Disconnected OpaqueRange remains in Highlight but is collapsed (input)]
    expected: FAIL

  [OpaqueRange in Highlight is collapsed after element removal (input)]
    expected: FAIL

  [OpaqueRange can be added to and deleted from a Highlight (textarea)]
    expected: FAIL

  [OpaqueRange mixed with DOM Range in same Highlight (textarea)]
    expected: FAIL

  [Disconnected OpaqueRange remains in Highlight but is collapsed (textarea)]
    expected: FAIL

  [OpaqueRange in Highlight is collapsed after element removal (textarea)]
    expected: FAIL