I'm facing the same issue as the one posted at (How to get authorize code to dismiss login page with oauth2 wso2 identity server)
I tried to follow the solution instructions, but in my case, the drop-down menu under "Request Path Authentication Configuration" is empty; no options listed.
I checked the application-authentication.xml file under /opt/wso2am-4.1.0/repository/conf/identity and I have this:
I'll apprecitate any support you can provide. Thanks. Daniel
Just to close this thread, and as I was not able to get a solution, I solved it by running an instnace of the WSO2 Identity Server and handle the security through this product, instead of using the IS features the API manager has embedded. cheers!