SwiftUI segmented control rendering bug

gistfile1.txt

//
//  ContentView.swift
//  toolbar-picker-bug
//
//  Created by Sam on 2026-02-19.
//

import SwiftUI

struct ContentView: View {
    @State private var tabSelection: Int = 0

    let colors: [Color] = [.indigo, .white, .black, .gray]

    var body: some View {
        NavigationStack {
            ScrollView {
                ForEach(colors, id: \.self) { color in
                    color
                        .containerRelativeFrame(.vertical)
                }
            }
            .toolbar {
                ToolbarItem {
                    Picker("Tab", selection: $tabSelection) {
                        Label("First", systemImage: "square.and.arrow.up")
                            .tag(0)

                        Label("Second", systemImage: "folder")
                            .tag(1)
                    }
                    .pickerStyle(.segmented)
                }
                .sharedBackgroundVisibility(.hidden)
            }
        }
    }
}

#Preview {
    ContentView()
}

CleanShot.2026-02-19.at.21.53.10.mp4

CleanShot.2026-02-19.at.21.36.48.mp4