#Service Spring as Managed property of ManagedBean class in jsf is null - spring

Question

I've a webapp using JSF + Spring + Maven + JBoss (java 8).
I've a class ManagedBean with a property ManagedProperty which is a service spring.
In remote debugging I checked that the service is not injected and is null.
No errors in console (or server.log).
java class
#ManagedBean(name = "userBean")
#SessionScoped
public class UserBean implements Serializable {
...
#ManagedProperty(value = "#{loggedUserSession}")
private ILoggedUserSession loggedUserSession;
public String getUserLogin() {
return loggedUserSession.getUser();
}
public ILoggedUserSession getLoggedUserSession() {
return loggedUserSession;
}
public void setLoggedUserSession(ILoggedUserSession loggedUserSession) {
this.loggedUserSession = loggedUserSession;
}
...
}
service java class
#Service("loggedUserSession")
#Scope(value = WebApplicationContext.SCOPE_SESSION, proxyMode = ScopedProxyMode.TARGET_CLASS)
public class LoggedUserSessionImpl implements ILoggedUserSession, Serializable {...}
pom.xml
...
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.2.13</version>
</dependency>
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>6.2</version>
</dependency>
<dependency>
<groupId>javax.enterprise</groupId>
<artifactId>cdi-api</artifactId>
<version>2.0.SP1</version>
</dependency>
...
web.xml
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
In the applicationContext.xml i mapped <context:component-scan ... /> and
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>classpath:conf.properties</value>
</property>
</bean>
I noticed the error at runtime.
I checked in web.xml, faces-config, applicationContext.xml and pom.xml but I didn't find anything strange.