In master, the media and text blocks are missing in the previews. This can be seen in the Team preview, and the Small Business preview under the "About Us" section.


@retrofox brought up that it could be fixed in Gutenberg Core. Let's double-check, test, and update this ticket.
I've tested the current approach of the SPT plugin. It means master branch either for Full Site Editing plugin as well as the Gutemberg one.

It's working as expected:

just in case, don't pay attention to the broken styles. It has been tackled in another issue/PR.
Keeping this issue opened until other folks can confirm this.
Confirmed fixed with Gutenberg 6.4.0