UI Refresh - Invoice management --> Page loading issue

Steps:-
1] Log into the Azure site using partner credentials
2] Search and select Softchoice for hspl company
3] Now click on Invoice Management option from Benadmin curtain
4] Now edit an invoice in which only one month's invoice is generated.
5] Click on the first tab i.e Create Invoice Template tab and observe the page

Actual Result:-
When we click on the Create Invoice Template tab the system keeps on loading but does not load completely

Expected Result:-
When we click on the Create Invoice Template tab the system should load the page quickly

Please let me know if you need any more information on this