SwiftUI .onDelete Animation Irregular & Clunky

In the attached code, both with sections (commented lines) and without, when a row is deleted, 3 different animations occur, depending on the location of the deleted row.

Sometimes, the animation is smooth and as expected - the line just fades out. For other rows, a remaining row "jumps in" from the left side of the screen and at lastly, a remaining row "flies down" from above. The result is an unclean animation.

Has anyone seen this behavior or do I have a error in the implementation? Any suggestions?

David

Code Block 
import SwiftUI
struct DeleteTest: View {
    @State private var users = [["Paul", "Taylor", "Adele", "Michael", "Courtney"],
                                ["James", "Peter", "Paul", "Mary"],
                                ["Hugo", "Natalie", "Heber", "Nata"]]
    @State private var allUsers = ["Paul", "Taylor", "Adele", "Michael", "Courtney", "James", "Peter", "Paul", "Mary", "Hugo", "Natalie", "Heber", "Nata"]
    var body: some View {
        NavigationView {
            List {
                // plain list
                ForEach(allUsers.indices, id: \.self) { i in
                    NavigationLink(allUsers[i], destination: EmptyView())
                }
                .onDelete { rowSet in
                    allUsers.remove(at: rowSet.last!)
                }
                // grouped list
//                ForEach(users.indices, id: \.self) { i in
//                    Section {
//                        ForEach(users[i].indices, id: \.self) { j in
//                            NavigationLink(users[i][j], destination: EmptyView())
//                            // Text(user)
//                        }
//                        .onDelete { rowSet in
//                            self.delete(section: i, at: rowSet)
//                        }
//                    }
//                }
            }
            .listStyle(GroupedListStyle())
            .navigationBarTitle("Names", displayMode: .inline)
        }
    }
    func delete(section: Int, at offsets: IndexSet) {
        users[section].remove(at: offsets.last!)
    }
}