Thanks for your report. This is a duplicate of #249, please follow up there.
Shared calendars in ownCloud (at least read-only) stopped syncing
Not sure exactly since which version it appeared. Something about 0.8 - 0.8.2
Hi, maybe I have the same problem.
I just updated my Xperia SP to Cyanogen 12.1 (Android 5.1) and setup a fresh davdroid sync with my ownCloud 8.1 server : my shared calendars (with other ownCloud users) are not synced with my phone. Tasks seems working.
I’m using davdroid 0.8.2 from f-droid.
Edit : I tried to downgrade to 0.8.1, same problem.
I was collecting the logs, but you are right, it is the same than #581.
I fixed it on my owncloud server, waiting for an official update
I’m happy that it now works for you, so I’m closing this issue.