Campaigns Editor panel should be labeled as "Campaign" and not "Document"

[kjohnson]

Expected Behavior

The main sidebar panel in the Block Editor should use the Custom Post Type singular_name label, with "Document" as a fallback. The singular_name is set, but not showing in the Block Editor.

const documentLabel = useSelect( ( select ) => {
	const currentPostType = select( 'core/editor' ).getCurrentPostType();
	const postType = select( 'core' ).getPostType( currentPostType );

	return (
		postType?.labels?.singular_name ??
		__( 'Document' )
	);
} );

https://github.com/WordPress/gutenberg/blob/8bfa69b424ac0cfbaa8290d7967bfacd5e653dd8/packages/edit-post/src/components/sidebar/settings-header/index.js#L14

Visuals

Post	Page	Custom Post Type

Additional Context

• Use Post Type label for Document tab in Settings Header WordPress/gutenberg#17311

Acceptance Criteria

• Campaigns CPT sidebar label is "Campaign"

[kjohnson]

This seems to be a bug in Gutenberg.

[kjohnson]

I pulled down the Gutenberg repo. The build works as expected, so maybe this is an unreleased feature.

[kjohnson]

Looks like the edit-post module isn't the latest version. WP 5.5-beta-4 shipped with edit-post v3.21.3, so I'm guessing that the document label feature may have just missed that cut off.

See WordPress/WordPress@8e433f2