Issue with Microsoft Edge version 42.17134.1.0 in redirecting to vendor site

Hi,

I'm getting an issue with SagePay plugin  for nopcommerce in redirecting to vendor site.

Configuaretion :

I'm using Server Integartion using InFrame .

Steps to follow are :

When I click on Pay Now button after entering card info then iframe gets blank in UI and not redirect to vedor site. When I press Ctrl+F5 then it redircts to vendor site.

So it's not working with first time and when we refresh the page then it gets redirected.

Please helpme out.

Thanks