I've set up Azure B2C Authentication as the identity provider for our PowerPages portal. Users receive invitations to the portal via a flow. However, when they click on the invitation link to redeem it, they're redirected to the login.microsoft.com sign-in page instead of our configured Azure B2C setup. I'm wondering if this is expected behavior or if there's something misconfigured in our setup that's causing this redirection.
Users are expected to be redirected to the below screen

Instead redirected to login.microsoft.com sign-in page
