Shopify.Checkout.OrderStatus.addContentBox seems to have stopped working

[kunalwf]

The instructions here for Shopify.Checkout.OrderStatus.addContentBox no longer work. 

https://help.shopify.com/en/manual/orders/status-tracking/customize-order-status/order-status-javasc...

Is this intentional? If not, is there a timeline to restore it? 

Reproduction instructions:
, - Visit an order status page on any store
- Open console log
- Use this example script

Shopify.Checkout.OrderStatus.addContentBox(
     '<h2>Pick-up in store</h2>',
     '<p>We are open everyday from 9am to 5pm.</p>'
    )

-Expected: The browser displays the above content box in the order status page
- Actual: No changes occur in the browser (edited)