title: SwiftUI Form Picker only shows once
body: <p>I am playing around with SwiftUI, and am currently building a Form using a Picker. </p>
  
  <pre class="lang-swift prettyprint-override"><code>import SwiftUI
  
  struct ContentView: View {
    private let names = ["Bill", "Peter", "Johan", "Kevin"]
    @State private var favoritePerson = "Bill"
  
    var body: some View {
      NavigationView {
        Form {
          Picker("Favorite person", selection: $favoritePerson) {
            ForEach(names, id: \.self) { name in
              Text(name)
            }
          }
        }
        .navigationBarTitle("Form", displayMode: .inline)
      }
    }
  }
  </code></pre>
  
  <p>The first time you tap on the "Favorite person" row, the picker shows up fine, and tapping on one of the names brings you back to the form. But tapping on the form row a second time doesn't do anything: you don't go to the picker, the row stays highlighted but nothing happens. If this is a SwiftUI bug, is there a known workaround? (I already needed to use a small navigation bar title to work around the Picker UI bug where otherwise its content moves up when it's shown ☹️)</p>