(i just start learning app development)
I start a new project on Xcode using SwiftUI and i am learning .OnAppear and .onDisappear
it work great but as soon i close the simulator by swinging up the simulator the .OnAppear and .onDisappear doesn’t work anymore i don’t know what is wrong
i appreciate any help

i have search the internet, youtube , even Ai didn’t help
should the OnAppear and .onDisappear behave like this or is there a settings that can run these function event if the app closed

this is an example code

import SwiftUI

struct ContentView: View {
    
    @State private  var CountUp: Int = 0
    
    var body: some View {
        Text("(CountUp)")
        
    .onAppear {
        CountUp += 1
        }
    }
}

#Preview {
    ContentView()
}

once i close the simulator by swinging up the app and reopen it with in the simulator the .onAppear function don’t work anymore