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In my test app I have two squares (red and green) that change their size when I click a toggle button. I use two different approaches to change the scale. The red square is scaled using the .visualEffect modifier and the green square is scaled using the .scaleEffect modifier. When I click the button the first time, both squares change size. But when I click again and again, only the green square changes its size. The red square stays the same after the first change. Self._printChanges() show that both views get changes each time. What am I doing wrong? Or is this a bug? import SwiftUI import Observation struct ContentView: View { @State private var model: Model = Model() var body: some View { VStack { HStack { RedSquareView() GreenSquareView() } .environment(model) Button { model.scaled.toggle() } label: { Text("Toggle scale") } } .padding() } } struct RedSquareView: View { @Environment(Model.self) var model var body: some View { let _ = Self._printChanges() Rectangle() .fill(Color.red) .frame(width: 100, height: 100) .visualEffect { content, geometryProxy in content.scaleEffect(model.scaled ? 0.5 : 1.0, anchor: .center) } .animation(.bouncy, value: model.scaled) } } struct GreenSquareView: View { @Environment(Model.self) var model var body: some View { let _ = Self._printChanges() Rectangle() .fill(Color.green) .frame(width: 100, height: 100) .scaleEffect(model.scaled ? 0.5 : 1.0, anchor: .center) .animation(.bouncy, value: model.scaled) } } @Observable final class Model: Sendable { var scaled: Bool = false } #Preview { ContentView() }

Hello,Is there any way to download full Landmark sample project from WWDC19? (From Session 240 - SwiftUI On All Devices)