SwiftUI's `scrollTo(id:anchor:)` doesn't work if the ScrollView is scrolling

Can somebody tell me if I'm doing something wrong or SwiftUI's scrollTo(id:anchor:) just doesn't work if the ScrollView is scrolling? I have a trivial example that demonstrates the issue:

import SwiftUI

@main struct MyApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

struct Item: Identifiable {
    let id = UUID()
    let timestamp: Date
    let text: String
}

struct ContentView: View {
    
    @State private var items: [Item] = (0...10_000).map{ .init(timestamp: Date(), text: "Row \($0)") }
    @State private var scrollPosition = ScrollPosition(idType: Item.ID.self)
    @State private var newMessage: String = ""
    
    var body: some View {
        ScrollView {
            LazyVStack {
                ForEach(items) { item in
                    ItemView(item: item)
                }
            }.scrollTargetLayout()
        }
        .defaultScrollAnchor(.bottom, for: .initialOffset)
        .scrollPosition($scrollPosition, anchor: .bottom)
        .safeAreaBar(edge: .bottom) {
            HStack {
                TextField("Type here", text: $newMessage, axis: .vertical)
                    .textFieldStyle(.roundedBorder)
                Button("Send", action: {
                    let trimmed = newMessage.trimmingCharacters(in: .whitespacesAndNewlines)
                    guard !trimmed.isEmpty else { return }
                    newMessage = ""
                    items.append(.init(timestamp: .now, text: trimmed))
                    withAnimation(.smooth) {
                        scrollPosition.scrollTo(id: items.last!.id, anchor: .bottom)
                    }
                })
            }.padding()
        }
    }
}

struct ItemView: View {
    let item: Item
    var body: some View {
        VStack(alignment: .leading) {
            Text(item.text)
            Text(item.timestamp.formatted())
        }.padding()
        .frame(maxWidth: .infinity, alignment: .leading)
        .background(Color(red: .random(in: 0...1), green: .random(in: 0...1), blue: .random(in: 0...1)))
    }
}

#Preview {
    ContentView()
}