Open Radar

 
There are three bugs with the new contentMargins API when using it with scroll content. The code below demonstrates them, and I've captured them in the video.

1. The content inset change is not animatable.
2. If you scroll down to a certain offset, LazyVStack items will fly in and off screen
3. If you scroll to another offset, LazyVStack items will disappear and reappear.

struct ContentView: View {
    var body: some View {
      Button(action: {
              .opacity(0.5)
          showInset.toggle()
        }
      }, label: {
        Text("Toggle content inset")
      })
      ScrollView {
        LazyVStack {
          ForEach(0..<20) { index in
            Text("Row: \(index)")
              .frame(height: 100)
              .background(index % 2 == 1 ? Color.red : Color.green)
              .opacity(0.5)
          }
        }
      }
      .contentMargins(.top, showInset ? 0 : 72, for: .scrollContent)

    }

  @State private var showInset: Bool = false
}

#Preview {
    ContentView()
}