Intermittent timeout in /html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.html

[jdm]

  ▶ Unexpected subtest result in /html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.html:
  │ TIMEOUT [expected PASS] b'Navigating an opened window via location.href to a javascript: URL must not fire beforeunload: undefined completion'
  └   → Test timed out

  ▶ Unexpected subtest result in /html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.html:
  └ NOTRUN [expected FAIL] b'Navigating an opened window with an iframe via location.href to a javascript: URL must not fire beforeunload on the iframe: undefined completion'

  ▶ Unexpected subtest result in /html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.html:
  └ NOTRUN [expected PASS] b'Navigating an iframe via location.href to a javascript: URL must not fire beforeunload: string completion'

  ▶ Unexpected subtest result in /html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.html:
  └ NOTRUN [expected PASS] b'Navigating an iframe via src="" to a javascript: URL after insertion must not fire beforeunload: string completion'

  ▶ Unexpected subtest result in /html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.html:
  └ NOTRUN [expected TIMEOUT] b'Navigating an opened window via location.href to a javascript: URL must not fire beforeunload: string completion'