Steps to reproduce:

  1. Set up a Caldav calendar (mailbox.org here).
  2. With DAVx5 connect to this calendar.
  3. Cause an syncing error. In this case deleting a recurrent birthday reminder caused an error 403 (Forbidden) from the server.

Expected behaviour:

  1. DAVx5 continues with the next sync item, trying to sync as many items as possible.
  2. DAVx5 informs the user about all failed items.

Actual behaviour:
DAVx5 stops the sync. Many other sync items are not synced because one single failure.