Unknown order handler on header

Hi
After I update the plugin and WP core.
I just found there is a “handle-actions” on the box header. (one up arrow and one down arrow)
Do you know what’s happening for this? How to remove it?

this is for setting page:

        $settings_pages[] = array(
            'id'          => 'some-options',
            'option_name' => 'some-options',
            'menu_title'  => 'title,
            'icon_url'    => 'dashicons-megaphone',
            'style'       => 'no-boxes',
            'columns'     => 1,
            'tab_style'   => 'left',
            'tabs'        => $some_array,
            'capability' => 'edit_some_options',
        );

this what I put the metabox to setting page,
I use some dynamic value to generate tab content.

        foreach ($this->theme_options['account_group'] as $tab) {

            $meta_boxes[] = array(
                'title'          => 'title',
                'id'             => $tab['account_id'] . '_account',
                'class'          => 'details_group',
                'settings_pages' => 'some-options',
                'tab'            => $tab['account_id'],
                'show'           => array(
                    'relation'   => 'OR',
                ),
                'include'       => array(
                    'relation'  => $relation,
                    'user_id'   => $tab['able_edit_id'],
                    'user_role' => $available_role,
                ),
                'fields'         => array(

                    array(
                        'id'     => $tab['account_id'].'_detail_group',
                        'type'   => 'group',
                        'clone' => 1,
                        'max_clone' => 10,
                        'default_state' => 'expanded',
                        'collapsible' => true,
                        'save_state' => true,
                        'sort_clone' => true,
                        'group_title' => $tab['account_title'],
                        'add_button' => esc_html__( '+ Add More', 'GNEWSlang' ),
                        'fields' => array( .... some box array here

Please help, thank you