Custom template part name not showing correctly in Site Editor

[bgardner]

Description

I am experimenting with creating custom template part (Query) per @justintadlock’s tutorial: https://developer.wordpress.org/news/2023/06/upgrading-the-site-editing-experience-with-custom-template-part-areas/

Everything seems to be working properly, with the exception of the Site Editor, where the Query template part is still showing as Uncategorized. For context, here is the code I am using to register in my functions.php file:

/**
 * Register Query template part.
 *
 * @since 0.9.4
 */
function powder_query_template_part( array $areas ) {
	$areas[] = array(
		'area'        => 'query',
		'area_tag'    => 'section',
		'label'       => __( 'Query', 'powder' ),
		'description' => __( 'Custom description', 'powder' ),
		'icon'        => 'query'
	);

	return $areas;
}

add_filter( 'default_wp_template_part_areas', 'powder_query_template_part' );

Step-by-step reproduction instructions

1. Use function code from above to register the custom template part.
2. Access Site Editor screen to see Uncategorized template part name.

Screenshots, screen recording, code snippet

Screenshot showing Uncategorized (incorrect, should be Query) template part:

Screenshot showing Query (correct) on the edit Template Parts screen:

Environment info

WordPress 6.3-RC1
Gutenberg active

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

[justintadlock]

This should be fixed by: #52355

You can test with 16.3.0 RC 1: https://github.com/WordPress/gutenberg/releases/tag/v16.3.0-rc.1

[bgardner]

@justintadlock Ah yes, it is working. Confirmed. By any chance can we expect at some point the same "Replace Header" and "Replace Footer" functionality that we see in templates for Header and Footer template parts? It would be great for users to easily replace the contents of the Query template part with a selection of Query patterns. (Default, List, Grid, etc)

[justintadlock]

There's a ticket for it here: #44689

I'm hoping we can get that in for WordPress 6.4.

[bgardner]

Closing this issue as I have confirmed @justintadlock's comment about this being fixed in 16.3.0-RC1.