NavigationLinkBug.swift

import SwiftUI
import PlaygroundSupport

struct RootView: View {
    var body: some View {
        NavigationView {
            MainView()
        }
    }
}

struct MainView: View {
    
    var body: some View {
        List {
            NavigationLink(destination: SecondaryView()) {
                Text("working")
            }
            ScrollView(.horizontal) {
                HStack {
                    NavigationLink(destination: SecondaryView()) {
                        Text("Not working")
                    }
                    NavigationLink(destination: SecondaryView()) {
                        Text("Not working")
                    }
                    NavigationLink(destination: SecondaryView()) {
                        Text("Not working")
                    }
                    NavigationLink(destination: SecondaryView()) {
                        Text("Not working")
                    }
                    NavigationLink(destination: SecondaryView()) {
                        Text("Not working")
                    }
                }
            }
        }
    }

}

struct SecondaryView: View {
    var body: some View {
        Text("Hello world")
    }
}

PlaygroundPage.current.liveView = UIHostingController(rootView: RootView())
PlaygroundPage.current.needsIndefiniteExecution = true