Pure Calendar widget no longer sees calendars that are being synced by Davdroid. Calendars can be seen in the stock Android calendar app so I know that the sync is working. This is on a Nexus 5x running Android 6.0.1. Pure Calendar is version 3.5.2.
Uninstalled Davdroid 1.0. Uninstalled Pure Calendar. Reinstalled Davdroid 1.0 and setup Webdav sync with my Owncloud server. Everything looks ok after syncing. Reinstalled the Pure Calendar app. Tried setting up the widget and it still does not see the Webdav calendars.
On my Nexus 7 running Android 6.0.1, the Davdroid app is still on version 0.9.1.3 and everything is working fine. Pure Calendar is the same version as on the Nexus 5. Something has changed in Davdroid 1.0 that is stopping Pure Calendar from seeing the Webdav calendars even though the stock Android calendar app sees them.