now we are using odoo8, and trying to upgrade to odoo11.

when printing the report like purchase order and sale order, I can print the report as the popup web sheet (by setting >> reports >> reports >> select the Model of the report and change Report Type to HTML).

but when I used the same setting in Odoo11,  the purchase(sale) order is just on the same web sheet. It causes a problem that if I want to print it and I will print the tags at the left side at the same time.

how can I modify it to popup another web sheet just like in Odoo8?