This is a testharness.js-based test.
[FAIL] Selection range in shadow should not be as a selection range after the host is removed
  assert_equals: Selection should not have the range in removed shadow expected 0 but got 1
[FAIL] Selection range in shadow should not be as a selection range after the host parent is removed
  assert_equals: Selection should not have the range in removed shadow expected 0 but got 1
[FAIL] Selection range in shadow should not be as a selection range after the host is replaced with itself (.replaceWith)
  assert_equals: Selection should not have the range in removed shadow expected 0 but got 1
[FAIL] Selection range in shadow should not be as a selection range after the host is replaced with itself (.replaceChild
  assert_equals: Selection should not have the range in removed shadow expected 0 but got 1
Harness: the test ran to completion.