Keychain disappears after iPhone reboot in iOS 18

When I reboot my iPhone 14 pro with Live Activity started, KeyChain information disappears. So there is a problem that I have to sign-in again when I enter the app. There is no problem rebooting the iPhone without Live Activity. iOS17 didn't have this problem.

Is this an app that you’re developing?

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

@DTS Engineer Yes, this is a problem that occurs in the app I am developing.

Keychain disappears after iPhone reboot in iOS 18
 
 
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