TextField's text color is wrong

STR:

1. Enter email into the text field – test+ap11@gmail.com
2. Change the foregroundColor of the text field by tapping the "Change color" button

ER: The color of the complete label is changed. The whole label is red.

AR: The label color is changed partly. Some of characters are red, some of them are black.

Environment: Only iOS 16 (iOS 15 is ok)

struct ContentView: View {
  @State var text = ""
  @State var isRed = false
   
  var body: some View {
    VStack {
      TextField("enter text here", text: $text)
        .foregroundColor(isRed ? .red : .black)
      Button {
        isRed = !isRed
      } label: {
        Text("Change color")
      }
    }
  }
}