Just ran into this problem today. Everything was hooked up and working then it just stopped. I’m using auth0-js with react. I use the buildAuthorizeUrl method to launch the hosted login. There is a state param in the url at that point. However on the callback there is no state. It says ‘undefined’. Funny enough if I try and log in again SSO kicks in and I am successfully logged in. For whatever reason state is not sent back with the callback. Any thoughts?