My customers who installed ios 15.0(iPhone 11) & 15.0.1(iPhone 12 pro) have the same problems with UserDefaults which had been wiped out a few hours later after the launch of the app.

My customers who installed ios 15.0(iPhone 11) & 15.0.1(iPhone 12 pro) have the same problems with UserDefaults which had been wiped out a few hours later after the launch of the app. And of course, it's after "didFinishLaunching" and I try to retrieve it several times at different timing. I don't know if it is related to the other issue. https://developer.apple.com/forums/thread/688697

My customers who installed ios 15.0(iPhone 11) & 15.0.1(iPhone 12 pro) have the same problems with UserDefaults which had been wiped out a few hours later after the launch of the app.  And of course, it's after "didFinishLaunching" and I try to retrieve it several times at different timing.  I don't know if it is related to the other issue. https://developer.apple.com/forums/thread/688697

I guess it's a bug on Xcode 13.0+. I've encountered it several times. And sometimes you just restart Xcode and the simulator will be fine but sometimes need to restart your computer(or try clean build).