Thank you!

Thanks for your reply. For as save by using modelContext.save() can lead to unforeseen issues w/ data relating to relationship, so I don't want to use it :( I retested this issue on Xcode 15.1 beta (15C5042i) and found that: This issue always happens on Preview w/ iOS 17 or iOS 17.2. This issue doesn't happen on Simulator w/ iOS 17 BUT it happens on Simulator w/ iOS 17.2 So I think, this issue relates to iOS 17.2

I installed Xcode 14.1 but it cannot connect to iPad0S 15.7 :(

I found Xcode 13.4.1 doesn't support iOS 15.7, how to solve this issue?

it's weird, I found no support for iOS 15.7 on Xcode 13.4.1 (13F100)

I tried, but Xcode 13.4.1 and Xcode 14.1 beta don't support iOS 15.7 :(

Xcode 13.4.1 and Xcode 14.1 beta don't support iOS 15.7 :(