title: iOS 14 Invalid frame dimension (negative or non-finite)
body: <p>My App uses GeometryReader with some padding to setup a View frame dimension inside a NavigationView.</p>
  <p>Since iOS 14 i get the following error message:</p>
  <p>Invalid frame dimension (negative or non-finite)</p>
  <p>Here is some example code to test:</p>
  <pre><code>import SwiftUI
  
  struct ContentView: View {
  
      let padding:CGFloat = 16.0
  
      var body: some View {
          NavigationView {
              GeometryReader { p in
          Text(&quot;Hello, world!&quot;)
              .frame(width: p.size.width - padding)
              .padding()
              }
          }
      }
  }
  
  struct ContentView_Previews: PreviewProvider {
      static var previews: some View {
          ContentView()
      }
  }
  </code></pre>
  <p>Removing NavigationView fix the problem, but I need the current width and height of the container View inside the NavigationView.</p>
  <p>Any suggestion?</p>