In the calendar:

1.  I added several events to the calendar, with more than one occuring on the same day (e.g. 3 events on March 15).

2.  Events posted as expected.

3.  I added a recurring event starting on March 8 and recurring every Thursday for 3 weeks. 

4.  Recurring event appeared as expected on March 8, 15, and 22.  Other events that had previously been entered disappeared.

Adding to the behavior of this bug:

Upon refreshing the page, the recurring event displayed twice on the assigned dates AND on May 8, which was the date I had originally added three unrelated, one time, events to. Screenshot attached.