Preview Iframe does not work

  • We rely on inter-frame communication. Some script/ad blockers intercept this; switch yours off or add an exception.
  • If you happen to run the server on (check your .envs) but access admin in incognito mode, via localhost, the preview will fail (or you have to enable 3rd-party cookies). Cf. this StackOverflow question.
    Presumably also the case for other IPs vs domains.
  • Also check the DevTools console for mentions of window and iframe.