Wrong body_class hook

[trumpeta]

Using

class Hooks {

    /**
     * Class constructor
     *
     * @since 2.1.0
     *
     * @return void
     */
    public function __construct() {
        add_filter( 'body_class', [ self::class, 'add_body_class' ] );
        add_filter( 'admin_body_class', [ self::class, 'add_body_class' ] );
    }

    /**
     * Add additional body classes
     *
     * @since 2.1.0
     *
     * @param array|string $classes array for frontend, string for backend
     *
     * @return array|string array for frontend, string for backend
     */
    public static function add_body_class( $classes ) {
        $additional_classes = [];

        if ( version_compare( get_bloginfo( 'version' ), '5.4', '<' ) ) {
            $additional_classes[] = 'wp-console-wp-lt-5-4'; // wp version less than 5.4
        }

        if ( is_admin() ) {
            $classes .= ' ' . implode( ' ', $additional_classes );
        } else {
            $classes = array_merge( $classes, $additional_classes );
        }

        return $classes;
    }
}

is wrong as I still get admin treatment on frontend. Suggested fix by AI bot is

add_filter('body_class', [self::class, 'add_body_class']);
add_filter('admin_body_class', [self::class, 'add_admin_body_class']);

public static function add_body_class($classes) {

    if (version_compare(get_bloginfo('version'), '5.4', '<')) {
        $classes[] = 'wp-console-wp-lt-5-4';
    }

    return $classes;
}

public static function add_admin_body_class($classes) {

    if (version_compare(get_bloginfo('version'), '5.4', '<')) {
        $classes .= ' wp-console-wp-lt-5-4';
    }

    return $classes;
}

[ediamin]

Hi @trumpeta! Sorry for the late reply, and thanks for the suggested fix. Unfortunately, I'm not able to reproduce the issue on WordPress versions below 5.4. Could you please let me know which WordPress and PHP versions you're using?