I have found that adding an offset AND background to the list causes the problem.
Simple code to show the problem (this has been submitted to Feedback).
import SwiftUI
struct ContentView: View {
var body: some View {
NavigationView {
List {
NavigationLink ("Test1", destination: Text("Test1"))
NavigationLink ("Test2", destination: Text("Test2"))
}
.background(Color(UIColor.secondarySystemBackground))
.offset(x: 0, y: 20)
}
}
}