Description

Referring to Automattic/wp-calypso#79224, the site editor might display nothing when

1. The “Your homepage displays” setting is configured to a static page
2. The theme has a front-page.html or the user created a front-page template
3. The front-page template contains only patterns

The reason is the registered patterns/blocks are filtered out via the canInsertBlockType function because the block editing mode is disabled, and it's disabled due to useDisableNonPageContentBlocks

Step-by-step reproduction instructions

1. Install and activate the themes below

• Kigen
• Hey

3. Go to Settings > Reading, and configure “Your homepage displays” to a static page
4. Go to Appearance > Editor
5. Ensure the preview displays nothing

Screenshots, screen recording, code snippet

Environment info

The latest trunk on 2 Aug

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes