Reminder stop sync updates between mac and iPhone after upgrade to iOS 15
Hi
I like some new features on the iOS 15, so I upgraded my Phone and then found out the Reminder can not synchronize updates between mac and iPhone. I'm using Catalina in my main working mac, and I am also a heavy user of Reminder. I don't want to upgrade my Mac system because some apps need a staple system to run. I wonder is it designed to be this way or it's a bug that can be fixed? I hope Reminder can upgrade individually just like other apps, so users don't have to bother with problems like this.
iPhone 11 Pro