[keycloak-user] Spring Security Adapter working but no Principal

Hi, i have a weird thing going on. My keycloak Spring Security adapter works as expected. But i am unable to retrieve the principal. I am requesting a REST service with a valid Bearer Token. In the REST controller i want to see the principal via: Principal userPrincipal = request.getUserPrincipal(); or Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); String currentPrincipalName = authentication.getName(); But everything is null. Funny thing is, the Keycloak Filter set the Authentication correctly but at the end, in my controller, its not there anymore. here is my filter list: Security filter chain: [ WebAsyncManagerIntegrationFilter SecurityContextPersistenceFilter HeaderWriterFilter KeycloakPreAuthActionsFilter LogoutFilter KeycloakAuthenticationProcessingFilter RequestCacheAwareFilter SecurityContextHolderAwareRequestFilter AnonymousAuthenticationFilter SessionManagementFilter ExceptionTranslationFilter FilterSecurityInterceptor ] Has anyone experienced something like this or has an idea? Thanks Marc