v.1.7.0.2 | Order History > Details | Open new page instead loaded by Ajax ?

[gonebdg - webindoshop.com]

As we know in previous version (< 1.6) if we click "Details" the order details will be loaded by ajax.

But in v.1.7.0.2 click "Details"

it will open a new page with URL /index.php?controller=order-detail&id_order=X and it's not a friendly URL

Is this a standard behaviour on this version or a bug ?