Injecting SharedEventManager

[novrm]

Why in \ZfcUser\EventManager\EventProvider we injected SharedEventManager

    public function getEventManager()
    {
        if (!$this->events instanceof EventManagerInterface) {
            $this->setEventManager(new EventManager(new SharedEventManager()));
        }
        return $this->events;
    }

... but in \ZfcBase\EventManager\EventProvider - not?

    public function getEventManager()
    {
        if (!$this->events instanceof EventManagerInterface) {
            $this->setEventManager(new EventManager());
        }
        return $this->events;
    }

Its situation leads to non correct working events.