I do have a SoGO server from where I want to sync addresses to the phone.
I use the same SoGO account for the calendar where sync works just fine.
But syncing the address book is weird.
I’ve enabled the contacts app to show the sync account. Apart from that only the phone local address book is enabled, the google account and others are disabled.
I can enter new contacts into the sync account. But neither the ones entered on the phone nor the ones synced from the server show up in the native calendar app (nor in Calendar+ that I installed for checking).
But the contact entered on the phone syncs just fine to the server and from there on into the OS X address book.
I currently have no idea how to diagnose this further.
I do not understand why I can enter a contact for the sync account in the contacts app but then it does not show it.
This is on CM13 the first snapshot on a Nexus 5.