Welcome to Gutenberg editor popup appears for anonymous user

Drupal 9.4.6.

If I see my site as a confidential user/surfer from a brand-new web browser session (all cache gotten rid of) I obtain “Invite to Gutenberg editor” popup.

  • Providing Gutenberg authorizations just to admin really did not assist

While I have reported this as a bug, I still ask right here for suggestions just how to do away with that popup.