Can't disable Writing Tools for SwiftUI TextField

I'm trying to disable Writing Tools for a specific TextField using .writingToolsBehavior(.disabled), but when running the app on my iPhone 16 Pro with Apple Intelligence enabled, I can still use Writing Tools on the text box. I also see no difference with .writingToolsBehavior(.limited).

Is there something I'm doing wrong or is this a bug?

Sample code below:

import SwiftUI

struct ContentView: View {
    @State var text = ""
    var body: some View {
        VStack {
            TextField("Enter Text", text: $text)
                .writingToolsBehavior(.disabled)
        }
        .padding()
    }
}

#Preview {
    ContentView()
}