SwiftUI List with children crashes when the last item is deleted

Hello,
I narrowed down the problem and created a clean project. The code is below.
I found similar issue on forum, it was fixed there eventually for a regular list. However it wasn't fixed for a list with children.

Reproduces 100% of time, faced on macOS 11.1, I'm on "11.2 Beta (20D5029f)" currently.
Xcode Version 12.3 (12C33)

Run the project, click the remove button 3 times - it crashes.

Try and remove "children" part of the list, it stops crashing.

The crash happens at

Code Block 
SwiftUI`SwiftUI.OutlineListUpdater.init(base: SwiftUI.ListStyleDataSource<A>) -> SwiftUI.OutlineListUpdater<A>:

Are there any temporary workarounds?

Code Block 
import SwiftUI
struct Item: Identifiable {
  let id: UUID
  let name: String
  let children: [Item]?
   
  init(id: UUID = UUID(), name: String = String(UUID().uuidString.prefix(6)), children: [Item]? = nil) {
    self.id = id
    self.name = name
    self.children = children
  }
}
class ViewModel: ObservableObject {
   
  @Published var items: [Item] = ViewModel.generateRandom()
   
  func removeLast() {
    var itemsCopy = items
    itemsCopy.removeLast()
    items = itemsCopy
  }
   
  func generateNew() {
    items = ViewModel.generateRandom()
  }
   
  static func generateRandom() -> [Item] {
    [
      .init(children: [.init(), .init()]),
      .init(children: [.init(), .init()]),
      .init(children: [.init(), .init()]),
    ]
  }
}
struct ContentView: View {
   
  @StateObject var viewModel: ViewModel = ViewModel()
   
  var body: some View {
     
    VStack {
      List(viewModel.items, id: \.id, children: \.children) { item in
        VStack {
          Text(item.name).padding()
          Divider()
        }
      }
       
      Button("generate new") {
        viewModel.generateNew()
      }
       
      Button("remove last") {
        viewModel.removeLast()
      }
    }
  }
}