ZStack

is_this_a_bug.swift

import SwiftUI

struct ContentView: View {
    @State var cond = false
    var body: some View {
        ZStack {
            Color.blue
            Test(cond: cond).onTapGesture {
                withAnimation(.easeInOut(duration: 2)) {
                    cond.toggle()
                }
            }
        }
    }
}

struct Test: View {
    var cond: Bool
    var body: some View {
        if cond {
            Text("One")
        } else {
            Text("Two")
        }
    }
}