I am using Kontact on two computers to access my Owncloud (CalDAV) calendar. I am also accessing the calendar from an Android phone. If I delete a calendar event in Kontact on one computer or on the Android phone, it does not get deleted from Kontact on the other computer. However, if I delete the event from Kontact on either computer, it does delete the event from the Android phone. This problem only affects events that I delete. If I just edit an event, the changes are reflected on all of my devices. What would cause the events to not be deleted in Kontact?

Kontact 4.11.5
OpenSUSE 13.1
Owncloud 7.0.1