SwiftUI: listSectionSeparator not working on macOS

Hi, When I use 'listSectionSeparator' on hide the section separator on a List 'section', it works as expected on iOS, but doesn't have any effect on macOS. Is that a known issue? Are there any workarounds for this?

Here's a basic reproducible example:

import SwiftUI

struct TestItem: Identifiable, Hashable {
    let id = UUID()
    let itemValue: Int
    
    var itemString: String {
        get {
            return "test \(itemValue)"
        }
    }
}

struct TestListSelection: View {
    let testArray = [TestItem(itemValue: 1), TestItem(itemValue: 2), TestItem(itemValue: 3), TestItem(itemValue: 4)]
    @State private var selectedItem: TestItem? = nil
    
    var body: some View {
        List (selection: $selectedItem) {
            Section("Header") {
                ForEach (testArray, id: \.self) { item in
                    Button {
                        print("main row tapped for \(item.itemValue)")
                    } label: {
                        HStack {
                            
                            Text(item.itemString)
                            Spacer()
                            Button("Tap me") {
                                print("button tapped")
                            }
                            .buttonStyle(.borderless)
                        }
                    }
                    .buttonStyle(.plain)
                }
            }
            .listSectionSeparator(.hidden) // has no effect on macOS
            
            Section("2nd Header") {
                ForEach (testArray, id: \.self) { item in
                    Text(item.itemString)
                }
            }
            .listSectionSeparator(.hidden) // has no effect on macOS
        }
        .listStyle(.plain)
    }
}

#Preview {
    TestListSelection()
}