It is possible to use PublishPress Authors together with the Full-Site Editing feature in WordPress.
The Full-Site Editing feature often relies on the Query Loop block to display content. There is a long-standing issue with the Query Loop block that prevents shortcodes from working correctly. This impacts plugins including PublishPress Authors, so a workaround is needed.

This workround requires the plugin called “Meta Field Block“. After installing this plugin, there will be a block available called “Meta Field Block”, as show in this next screenshot.

- Find the Query Loop block layout inside your theme or page template.
- Add the Meta Field Block inside the Query Loop Block, as in this screenshot below:

- In the sidebar, choose “Dynamic Field” for the “Field Type”.
- Enter the PublishPress Authors shortcode into the “Field Name”.

This process will allow PublishPress Authors profiles to show inside the Query Loop. In the screenshot below, the PublishPress Authors plugin has successfully added multiple author profiles to each post.

