Zull + Eureka (same application) + oauth (external service) - spring-security

Question

I'm currently trying to build an application with Zuul + Eureka, using spring boot, running on port 9000. Everything works fine until I bring up #EnableOAuth2Sso to the application. From that moment on, no service (not even the Zuul + Eureka application itself) can register to Eureka anymore.
When I try to access http://localhost:9000, the browser shows me the login page, I enter my dummy user credentials (user, password) and I can see Eureka's dashboard, showing no client registered (as shown in the images at the bottom of this question).
Can anyone point me any direction to go? I think I could tell the Zuul + Eureka security part to permit all requests to Eureka, but I don't know how to do it.
My application.yml:
server:
port: 9000
logging:
level:
com:
netflix:
eureka: OFF
discovery: OFF
eureka:
instance:
leaseRenewalIntervalInSeconds: 1
leaseExpirationDurationInSeconds: 2
client:
register-with-eureka: true
fetch-registry: true
serviceUrl:
defaultZone: http://127.0.0.1:9000/eureka/
healthcheck:
enabled: true
security:
sessions: ALWAYS
basic.enabled: false
oauth2:
client:
accessTokenUri: http://localhost:9999/uaa/oauth/token
userAuthorizationUri: http://localhost:9999/uaa/oauth/authorize
clientId: acme
clientSecret: acmesecret
resource:
userInfoUri: http://localhost:9999/uaa/user
jwt:
keyValue: |
-----BEGIN PUBLIC KEY-----
#here goes my public key
-----END PUBLIC KEY-----
My annotaded application class:
#EnableZuulProxy
#EnableEurekaServer
#EnableEurekaClient
#EnableOAuth2Sso
#SpringBootApplication
public class GatewayApplication {
public static void main(String[] args) {
SpringApplication.run(GatewayApplication.class, args);
}
}