SAML authentication does not redirect to original page

Hi,

We have configured SAML Authn handler in our AEM 6.5 . We have a public page (ex - /content/test/mypage.html ) which has a link to login page , ex - /content/test/login.html.
Login page URL is configured in SAML Authentication handler & Sling Authentication Service.

On click of login link, we redirect to http://localhost:4503/content/test/login.html?saml_request_path=http://localhost:4503/content/test/mypage.html . This takes us to Okta IDP login page and Okta then submits SAML response to ACS service configured in AEM viz.  "/content/test/saml_login" but after that we get redirected back to the login page : http://localhost:4503/content/test/login.html?saml_request_path=http://localhost:4503/content/test/mypage.html,

instead of going to public page from where login was started http://localhost:4503/content/test/mypage.html. 

How can I redirect back to public page , instead of going to login page ?

Thanks!