Content URL Redirect does not work

I have created a Microsoft team app in the App Studio. The application has a tab with the content configured to external URL. The application works fine on the mobile phone; however does not work on the desktop.

It fails on redirection. The logic is that if the user is not authenticated then the web app redirects the user to a custom login page outside of the domain. e.g. content URL is https://xxx.com redirects to https://pqr.com

This works just fine in the mobile app; however, it does not redirect in the desktop application. Appreciate any help.