[D][2023-11-02 +8.0 08:49:02.690][83070, 10760304128*][***][UINavigationController+SafeTransition.m, -[UINavigationController(SafeTransition) safePushViewController, 98][<XTCWatchListViewController: 0x1138a0200> 1
[D][2023-11-02 +8.0 08:49:03.619][83070, 10760304128*][***][UINavigationController+SafeTransition.m, -[UINavigationController(SafeTransition) safePushViewController, 98][<MessageRecordViewController: 0x1138177b0> 1
[D][2023-11-02 +8.0 08:49:05.284][83070, 10760304128*][***][UINavigationController+SafeTransition.m, -[UINavigationController(SafeTransition) safePopViewControllerAnimated, 71][<MessageRecordViewController: 0x1138177b0> 1
[D][2023-11-02 +8.0 08:49:06.806][83070, 10760304128*][***][UINavigationController+SafeTransition.m, -[UINavigationController(SafeTransition) safePopViewControllerAnimated, 71][<XTCWatchListViewController: 0x1138a0200> 1
[D][2023-11-02 +8.0 08:49:08.090][83070, 10760304128*][***][UINavigationController+SafeTransition.m, -[UINavigationController(SafeTransition) safePopViewControllerAnimated, 71][<XTCWatchListViewController: 0x1138a0200> 1
如上堆栈，0x1138a0200这个实例连续执行了两次pop，导致UI界面被卡死，直到用户退出后台再进入APP才恢复。什么原因会导致这种情况么？
ywoo
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The project uses keychain to store data. When kSecAttrAccessible is set to kSecAttrAccessibleAfterFirstUnlock or this property is not set, Apple backs up the system and restores it to the new machine. Will the data stored in the keychain be transferred to the new machine?
Will the data in UserDefault be additionally transferred to the new machine?