Post slug cannot be edited after add add_rewrite_rule

Because I wanted to add a blog reference to the slug of each post, I add a add_rewrite_rule.
But now the slug can not be edited on the dashboard.
How can I make the slug editable?
my dashbord:

my code:

 // Add /blog/ to all blog pages.
class BlogPage{

    const SLUG_BLOG = 'blog';

    public static function init() {
        self::wpa_fix_blog_pagination();
    }

    public static function wpa_fix_blog_pagination(){

        // Fix pagination
        add_rewrite_rule(
            'blog/page/([0-9]+)/?$',
            'index.php?pagename=blog&paged=$matches[1]',
            'top'
        );


        // Change the default 'post' and add /blog/ to permalink.
        add_rewrite_rule(
            self::SLUG_BLOG.'/([^/]*)$',
            'index.php?name=$matches[1]',
            'top'
        );
        add_rewrite_tag('%'.self::SLUG_BLOG.'%','([^/]*)');



        // Change the default permalink structure of tags and categories
        global $wp_rewrite;
        $wp_rewrite->extra_permastructs['category']['struct'] = '/' . self::SLUG_BLOG .'/category/%category%';
        $wp_rewrite->extra_permastructs['post_tag']['struct'] = '/' . self::SLUG_BLOG .'/tag/%post_tag%';

        // Change the default permalink structure of authors
        $wp_rewrite->author_base = 'blog/author';
        $wp_rewrite->author_structure = '/' . $wp_rewrite->author_base . '/%author%';
        add_rewrite_rule(self::SLUG_BLOG .'/author/([^/]+)/?$', 'index.php?author_name=$matches[1]', 'top');


        add_filter( 'post_link', array(__CLASS__,'change_post_link'), 10, 3 );
    }


    public static function change_post_link($url, $post, $leavename){
        if ( $post->post_type == 'post' ) {
            $url = home_url( user_trailingslashit( self::SLUG_BLOG . '/' . $post->post_name ) );
        }
        return $url;
    }

}
// Init Blog Class
add_action("init",function(){
    BlogPage::init();
});


function fix_guid( $guid ) {
    $guid = get_permalink( get_the_ID() );
    return $guid;
}
add_filter( 'get_the_guid', 'fix_guid' );

// redirect_posts_to_newblogurl if the post not starts with /blog/
add_action('template_redirect', function() {
    $lang = $_COOKIE["wp-wpml_current_language"];

    if (is_singular('post') && $lang == 'en') {
        if (substr( $_SERVER['REQUEST_URI'], 0, 6 ) !== "/blog/") {
            wp_redirect( get_the_permalink(), 301 );
            exit;
        }

    }
});