changing default calendar to CalDAV always reverts itself

When I open the Calendar, it includes a local default calendar that I cannot delete. I want my default calendar synced to my CalDAV server. CalDAV sync works fine when I add a new calendar. When I edit the default calendar, it keeps the color and name change, but it always reverts itself to "On My Computer" and does not sync. When I edit it again and switch it back to CalDAV, the settings are all still there. But it always immediately reverts itself to "On My Computer".

This is on Freya that is full updated as of today. I am on the stable PPAs. Here's the version:

ii maya-calendar 0.3.1.1+r798+pkg amd64 GTK+ calendar application

Launchpad Details: [#LP1522872](https://bugs.launchpad.net/bugs/1522872) Hans-Christoph Steiner - 2015-12-04 15:01:34 +0000

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