Issue: Since from ZCS 8.6.0 to ZCS 8.7.1 DAVdroid (188.8.131.52-ose) users are unable to see calendars shared to them. This affects RW and RO calendar shares equally.
Note: Calendar sharing works fine in the web client.
Prior Version: In 8.6.0 DAVdroid was able to view shared calendars via DAV, in 8.7.1.
Forum Post where issue was described by DAVdroid developer as:
When a WebDAV client like DAVdroid requests information for /dav/mthoben%40mpipz.mpg.de/SUSAN%20Calendar, but the server sends information about /dav/shares_susan%40mpipz.mpg.de/Calendar/33493472-4a26-4398-a074-d382b9b36a18.ics, there is a problem. This is not how WebDAV works – there is no way for a client to detect that the given information is related to the requested resource. This is a server bug, please report it to Zimbra.
Filed this Bug 107455