Why the selected rows don't stay selected after scrolling in SwiftUI?

Question

Why the selected rows become unselected if the list is scrolled (See the pictures)? Xcode 12.2. iOS 14.2.

I also get a console message:

[Assert] Attempted to call -cellForRowAtIndexPath: on the table view while it was in the process of updating its visible cells, which is not allowed.

Update

This seems to be iOS 14.2 bug. I downloaded a simulator for iOS 14.1 version and everything works just fine.

import SwiftUI

struct ContentView: View {

    @State private var selectedRows = Set<String>()
    var items = ["item1", "item2", "item3", "item4","item5","item6","item7","item8","item9","item10","item11","item12","item13","item14","item15","item16","item17","item18","item19","item20","item21","item22"]
    
    var body: some View {
        
        NavigationView {
            List(selection: $selectedRows) {
                ForEach(items, id: \.self) { item in
                    Text(item)
                }
            }
            .listStyle(InsetGroupedListStyle())
            .environment(\.editMode, Binding.constant(.active))
            
        }
    }
}