Custom fields not showing

I have created numerous plugins with Meta Box and extensions bundled in using composer without problems but for some reason, my latest plugin isn't working. The custom post type is being created and I can var_dump to see that the add_filter for adding the fields is being called correctly but the custom fields just aren't showing on the custom post edit page. I even put one of my other plugins in instead to rule out something specific with this site and it didn't work.

This is my Custom post class. Anyone see something stupid I'm doing?

class RentalPostType extends Base
{
    public function register()
    {
        add_action('init', [$this, 'register_rental_post_type']);
        add_filter('rwmb_meta_boxes', [$this, 'rental_fields']);
    }

    public function register_rental_post_type()
    {
        $labels = [
            'name'                     => esc_html__('Rentals', $this->text_domain),
            'singular_name'            => esc_html__('Rental', $this->text_domain),
            'add_new'                  => esc_html__('Add New', $this->text_domain),
            'add_new_item'             => esc_html__('Add New Rental', $this->text_domain),
            'edit_item'                => esc_html__('Edit Rental', $this->text_domain),
            'new_item'                 => esc_html__('New Rental', $this->text_domain),
            'view_item'                => esc_html__('View Rental', $this->text_domain),
            'view_items'               => esc_html__('View Rentals', $this->text_domain),
            'search_items'             => esc_html__('Search Rentals', $this->text_domain),
            'not_found'                => esc_html__('No rentals found.', $this->text_domain),
            'not_found_in_trash'       => esc_html__('No rentals found in Trash.', $this->text_domain),
            'parent_item_colon'        => esc_html__('Parent Rental:', $this->text_domain),
            'all_items'                => esc_html__('Rentals', $this->text_domain),
            'archives'                 => esc_html__('Rental Archives', $this->text_domain),
            'attributes'               => esc_html__('Rental Attributes', $this->text_domain),
            'insert_into_item'         => esc_html__('Insert into rental', $this->text_domain),
            'uploaded_to_this_item'    => esc_html__('Uploaded to this rental', $this->text_domain),
            'featured_image'           => esc_html__('Featured image', $this->text_domain),
            'set_featured_image'       => esc_html__('Set featured image', $this->text_domain),
            'remove_featured_image'    => esc_html__('Remove featured image', $this->text_domain),
            'use_featured_image'       => esc_html__('Use as featured image', $this->text_domain),
            'menu_name'                => esc_html__('Rentals', $this->text_domain),
            'filter_items_list'        => esc_html__('Filter rentals list', $this->text_domain),
            'filter_by_date'           => esc_html__('', $this->text_domain),
            'items_list_navigation'    => esc_html__('Rentals list navigation', $this->text_domain),
            'items_list'               => esc_html__('Rentals list', $this->text_domain),
            'item_published'           => esc_html__('Rental published.', $this->text_domain),
            'item_published_privately' => esc_html__('Rental published privately.', $this->text_domain),
            'item_reverted_to_draft'   => esc_html__('Rental reverted to draft.', $this->text_domain),
            'item_scheduled'           => esc_html__('Rental scheduled.', $this->text_domain),
            'item_updated'             => esc_html__('Rental updated.', $this->text_domain),
        ];
        $args = [
            'label'               => esc_html__('Rentals', $this->text_domain),
            'labels'              => $labels,
            'description'         => '',
            'public'              => true,
            'hierarchical'        => false,
            'exclude_from_search' => false,
            'publicly_queryable'  => true,
            'show_ui'             => true,
            'show_in_nav_menus'   => true,
            'show_in_admin_bar'   => true,
            'show_in_rest'        => true,
            'query_var'           => true,
            'can_export'          => false,
            'delete_with_user'    => false,
            '_slug_changed'       => true,
            'has_archive'         => true,
            'rest_base'           => '',
            'show_in_menu'        => true,
            'menu_position'       => '',
            'menu_icon'           => 'dashicons-location',
            'capability_type'     => 'post',
            // 'capabilities'        => [
            //     'create_posts' => 'do_not_allow', // Removes 'Add New' button
            // ],
            'supports'            => ['title', 'thumbnail'],
            'taxonomies'          => ['sd-region', 'sd-city', 'sd-suburb'],
            'rewrite'             => [
                'with_front' => false,
            ],
        ];

        register_post_type('sd-rental', $args);
    }

    public function rental_fields($meta_boxes)
    {
        $meta_boxes[] = [
            'title'      => __('Rental Fields', $this->text_domain),
            'id'         => $this->text_domain . '-rental-fields',
            'post_types' => ['sd-rental'],
            'closed'     => false,
            'revision'   => false,
            'fields'     => [
                [
                    'name'            => __('Display Address', $this->text_domain),
                    'id'              => $this->prefix . 'display_address',
                    'type'            => 'text',
                    'hide_from_rest'  => false,
                    'hide_from_front' => false,
                    'limit_type'      => 'character',
                ],
            ]
        ];

        return $meta_boxes;
    }
}