Thanks for replying. Yes, it works correctly on iOS 15, I just tested it after seeing your reply. The BUG is tested on real device iPhone13 with iOS 16.6.1. So it may be a problem of iOS 16.

Thanks for replying. Yes, you are right, I just tested it on an iOS 15 simulator. The BUG I found is tested on a real device iPhone 13 running iOS 16.6.1. Maybe it's a bug of iOS 16.

Thanks for replying. Yes, you are right, I just tested it on an iOS 15 simulator and get the correct result as you did. The bug is tested on a real device iPhone13 running iOS 16.6.1. Maybe it's a bug of iOS 16.6.1. BTW, I just replie you two times before this one. I am new to this forums and I don't know if I'm doing it right, because I don't see my replies to you appear on the page after I submitted.