[keycloak-user] Identity Brokering, external IDP require nonce

Hi, in my scenario, i'm using Keycloak as an IDP broker. It works fine with a lot of configuration. I build keycloak from source 3 weeks ago. However the IDP i'm trying to integrate right now requires a nonce in the first call on the authorization endpoint. https://myidp.com/authorize?scope=openid+profile&state=state&resp... fails but if i manually add "&nonce=1234" in the url it works I could not find an option in the external IDP concerning this nonce generation. Did i miss something ? Should i ask for a feature and i'll wait for someone to look at it ? any help would be appreciated Thanks a lot Amaury