I'm not seeing that issue. Do you have localization enabled or anything else configured to a non-default value? Any unusual messages in the log file? You can enable trace logging with: ./jboss-cli.sh --connect /subsystem=logging/logger=org.keycloak/:add(category=org.keycloak,level=TRACE) If starting from a clean install of Keycloak begin adding your configuration changes until the problem occurs and then we will have found the cause.