1) Create a recurrent event in a caldav calendar. Then drag one of the event to another day. We expect the event will be moved to another day but the actual result is that nothing happens.

2) Create a recurrent event in a caldav calendar. Then remove the recurrence rule. We expect the recurrence rule will be removed and the event will become a normal appointment, but hte actual result is that the event disappeared or nothing happens. We have to restart evolution to verify if the operation succeed.

3) All the events I created in the previous 2 case can not be removed. I select "Delete All Recurrences" but nothing happens. And the events are still there even after restarting evolution.