I just raised a bug on this one and would be interested to know if anyone is seeing the same. Specifically on the latest iOS 10.3 beta I noticed that any calendar event I add, change, delete on iOS never makes it/sync up with the backend server. For example, I can add an event in iOS Calendar app that will never turn up on my iCloud or Caldav calendars that I access on MacOS Sierra or through a web portal. However if I add, change, delete the event on the Mac the changes DO make it up to the backend calendar and down to iOS. Therefore this appears to be a one way sync issue. I've turned on and off the calendars on iOS, restored the phone from scratch, same thing.
Anyone else seeing this or have any other ideas ?
Thanks
