We have Event Booking set to allow registration for multiple events (classes) using the shopping cart. Our only payment method is PayPal. When users go through the checkout with PayPal. It appears that only the 1st event registered is having their status changed from pending to paid. It does indicate paid in full in the appropriate column. It's just not changing the red circle to the green checkbox for any of the events after the first one selected.
Please go to Extensions -> Plugins Manager, find and publish the "Events Booking - Cart Update" plugin. After that, check it again and it should work as expected