Can’t focus the sidebar on tvOS when TabView contains TabSection elements

In a TabView with the .sidebarAdaptable style, including TabSection elements prevents the default back swipe on the remote from revealing the sidebar. Removing all TabSection elements and using only Tab elements makes it work as expected:

import SwiftUI

struct ContentView: View {

    var body: some View {
        TabView {
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }

            TabSection("Section") {
                Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
                Tab("Tab", systemImage: "square.fill") { Button(action: {}) { Text("Button") } }
            }
        }.tabViewStyle(.sidebarAdaptable)
    }

}

Am I using it wrong, or is this a bug?