In WooCommerce 3.3, the overall appearance of the backend orders list is improved, and added a new preview button to quickly see order details. But besides the preview button if you click elsewhere in the whole row it will redirect you to the order view link. To prevent this you can simply add extra no-link in the post class for order screen.

For security reason WooCommerce sensitive checkout or account pages are rendered only on same origin iframes. But to load those pages on different origin iframes use the below snippet.