That issue is fixed in 4.0.1(patch).
Steps to apply the patch:
- Log into gluu container
- Move to **/opt/gluu/jetty/identity/webapps/**
- Save a copy of the existing identity.war
- Replace with this one **https://ox.gluu.org/maven/org/gluu/oxtrust-server/4.0.1.Final/oxtrust-server-4.0.1.Final.war**
- Restart identity service