Okta-auth-js idx.register() does not create idx cookie

I am using okta-auth-js and identity engine SDK for self-service registration. After the final step(proceed) of idx.register() which returns success status. No idx cookie is created although the Set-Cookie response header is in the final idx challenge & answer request. How do I resolve this issue?

Hi, this might be helpful for you to open a support case with us so we can work with you to capture a HAR file and trace the request to see if it is being hung up anywhere. Thank you.