ProgressView within Form not showing after the first time

I have a ProgressView in a Form, that's being toggled on and off. The first time it shows correctly, subsequently it does not. Outside of a Form it works correctly.

Here's the sample code:

struct BugWithProgress: View {
    
    @State var toggle: Bool = false
    
    var body: some View {
        Text("in form:").font(.title)
        Form {
            Toggle(isOn: $toggle, label: {
                Text("isOn: \(toggle)")
            })
            
            if toggle {
                HStack {
                    ProgressView()
                    Spacer()
                    ProgressView("Working...")
                    Spacer()
                    Text("Working...")
                }
            }
        }
        .frame(height: 200)
        Text("outside form:").font(.title)
        if toggle {
            HStack {
                ProgressView()
                Spacer()
                ProgressView("Working...")
                Spacer()
                Text("Working...")
            }
        }
    }
}

#Preview {
    BugWithProgress()
}

If I toggle it on once, it looks as expected. Here's what it looks like after I toggled it on twice or more:

As you can see, the spinning parts are missing within the Form.

Any suggestions or workarounds?

PS: Is this the correct place for SwiftUI bug reports?