Service Tracker has not been initialized

Issue

• I see the exception Caused by: javax.faces.FacesException: Service Tracker has not been initialized when trying to access FocusManager from a backing bean that is not on the same deployment unit as the JSF page:

Caused by: javax.faces.FacesException: Service Tracker has not been initialized
    at org.richfaces.application.ServiceTracker.getServicesFactory(ServiceTracker.java:103) [richfaces-core-4.5.2.Final-redhat-1.jar:4.5.2.Final-redhat-1]
    at org.richfaces.application.ServiceTracker.getService(ServiceTracker.java:84) [richfaces-core-4.5.2.Final-redhat-1.jar:4.5.2.Final-redhat-1]
    ...