Still investigating but FF on Windows has been experiencing some issues where passing back into the EDS seems to auto-submit a request to the IdP that is past the SAML Request stage and just includes the e1s1 webflow parameter from the first redirect by the IdP. It appears like it might be caching the entire sequence of redirects (EDS->SP->IdP) and just reissuing a stale request to the IdP.
Still investigating but FF on Windows has been experiencing some issues where passing back into the EDS seems to auto-submit a request to the IdP that is past the SAML Request stage and just includes the e1s1 webflow parameter from the first redirect by the IdP. It appears like it might be caching the entire sequence of redirects (EDS->SP->IdP) and just reissuing a stale request to the IdP.
Working on getting a trace.