I'm referring to https://central.owncloud.org/t/owncloud-10-0-4-4-davfs-issue/10741.
After updating my ownCloud instance to 10.0.4 CalDAV-/CarDAV-Sync with cellphone doesn't work anymore. However, synchronizing from MS Outlook with https://sourceforge.net/projects/outlookcaldavsynchronizer/ still works properly.
As already announced this issue should be fixed in ownCloud 10.0.5. Do you have any workaround available that fixes my issue in ownCloud 10.0.4?