If you’ve experienced synchronisation issues, and you have tried the troubleshooting steps, perform a full re-fetch of all lists from iCloud.
Open the Help menu
Choose Refresh all shared lists
It may take a few minutes to update your lists.
If you’re still experiencing synchronisation issues after the refresh, please report the problem, and include the diagnostic log when prompted. Please send the diagnostic log from each device.
Please note: Refetching is only supported for upgraded shared lists.
