[OpaqueRange-disconnect.html]
  [disconnect() resets range state and geometry.]
    expected: FAIL

  [disconnect() is idempotent.]
    expected: FAIL

  [disconnect() stops live offset updates.]
    expected: FAIL

  [disconnect() only affects the target range.]
    expected: FAIL

  [Element accepts new ranges after a prior range is disconnected.]
    expected: FAIL