Embedding iframe-escape-test.warc.gz coming from warcembed-demo.s3.amazonaws.com, proxied via warc-embed.lil.tools.
This is considered safe and should work even if third-party cookies are blocked.
Clicking on the "Test" button should not replace the current page with a YouTube video.
2022-09-02 Update: This specific escape scenario has been patched in replayweb.page 1.6.5.