Prerequisites: Deploy the calendar plugin.
1. Add the calendar portlet.
2. Create a new calendar using My Calendars -> Add Calendar or by My Calendars -> Manage Calendars -> Add Calendar.
3. Go back to Liferay. Select the calendar created. Create an event.
The user should be able to view the event.
After the event is created, the user is taken back to the calendar with nothing showing in the calendar.