Validation fails and the process does not interrupt

[fady.matar]

I have overridden the persist method in one of the beans to handle duplicate names.

Now the weird thing is that upon catching a duplicate, it's still redirecting to the view page and does not show the error messages. Can anyone assist?

@Override
public String create() {
 try {
 return super.update();
 } catch (Exception e) {
 e.printStackTrace();
 FacesMessage message = new FacesMessage("Name must be unique");
 FacesMessages.instance().addToControl("name", message);
 return null;
 }
}

[fady.matar]

I'm getting the exception on the console along with a message stating that the messages have been enqueued but not displayed. What's the cause?
This approach used to work with prior version of JBoss Seam

INFO: WARNING: FacesMessage(s) have been enqueued, but may not have been displayed.
sourceId=client:name[severity=(INFO 0), summary=(Name must be unique), detail=(Name must be unique)]