Twenty Twenty-One: Skip the untitled title filter in the admin

src/wp-content/themes/twentytwentyone/inc/template-functions.php

@@ -182,12 +182,17 @@ function twenty_twenty_one_continue_reading_link() {
 	 * Adds a title to posts and pages that are missing titles.
 	 *
 	 * @since Twenty Twenty-One 1.0
+	 * @since Twenty Twenty-One 2.9 Only applies the filter on the front end.
 	 *
 	 * @param string $title The title.
 	 * @return string
 	 */
 	function twenty_twenty_one_post_title( $title ) {
-		return '' === $title ? esc_html_x( 'Untitled', 'Added to posts and pages that are missing titles', 'twentytwentyone' ) : $title;
+		if ( is_admin() ) {
+			return $title;
+		}
+
+		return '' === $title ? esc_html_x( 'Untitled', 'Added on the front end to posts and pages that are missing titles', 'twentytwentyone' ) : $title;
 	}
 }
 add_filter( 'the_title', 'twenty_twenty_one_post_title' );

tests/e2e/specs/dashboard.test.js

@@ -149,11 +149,9 @@ test.describe( 'Quick Draft', () => {
 		await saveDraftButton.click();
 
 		// Check that the new draft title appears in the 'Your Recent Drafts' section.
-		// This test relies on Twenty Twenty-One being the active theme.
-		// Twenty Twenty-One alters the default post title from "(no title)" to "Untitled".
 		await expect(
 			page.locator( '.drafts .draft-title' ).first().getByRole( 'link' )
-		).toHaveText( 'Untitled' );
+		).toHaveText( '(no title)' );
 
 		await expect(
 			page.locator( '.drafts .draft-content' ).first()
@@ -164,6 +162,6 @@ test.describe( 'Quick Draft', () => {
 
 		await expect(
 			page.locator( '.type-post.status-draft .title' ).first()
-		).toContainText( 'Untitled' );
+		).toContainText( '(no title)' );
 	} );
 } );