[iOS 18.2 Beta] LazyVGrid within NavigationStack breaks animations

Hello. There seems to be a bug specifically in the iOS 18.2 (both Beta 1 and 2) and not seen in the previous versions.

The bug is: when LazyVGrid is nested inside NavigationStack and some elements of the LazyVGrid have animations, navigating into any nested view and then going back to the initial view with the LazyVGrid causes all animations to stop working.

Here is the example code inline:

struct ContentView: View {
    @State private var count: Int = 0
    
    var body: some View {
        NavigationStack {
            LazyVGrid(
                columns: Array(
                    repeating: GridItem(spacing: 0),
                    count: 1
                ),
                alignment: .center,
                spacing: 0
            ) {
                VStack {
                    Text(String(count))
                        .font(.system(size: 100, weight: .black))
                        .contentTransition(.numericText())
                        .animation(.bouncy(duration: 1), value: count)
                    
                    Button("Increment") {
                        count += 1
                    }
                    
                    NavigationLink(destination: { Text("Test") }, label: { Text("Navigate") })
                }
                
            }
        }
        .padding()
    }
}

Once you run the application on iOS 18.2 Beta (I've tried on a real device only), the steps to reproduce are:

  1. Tap on the "Increment button"
  2. You should see the number change with an animation
  3. Tap on the "Navigate" button
  4. Tap "Back" to go to the initial screen
  5. Tap "Increment" again
  6. The number changes without an animation

I can confirm that this affects not only .contentTransition() animation but any animation within the LazyVGrid, I've tested this in my real app.

Let me know if I can provide more details. Thank you!

I just tried on iOS 18.2 Beta 3 and the bug is still present.

Have the same issue on my app. Can Apple comfirm this is an bug?

I have filed a feedback (FB15897883), hope someone from Apple will take a look at this issue.

[iOS 18.2 Beta] LazyVGrid within NavigationStack breaks animations
 
 
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