Implementing a delete feature on a list in SwiftUI - ios

Question

I followed this document (and this one) to add a delete feature to my list in an app using SwiftUI. Both pages say that once you add the .onDelete(perform: ...) piece of code you will be able to swipe and get a Delete button. Nevertheless this is not what I see. The code compiles but I see nothing on swipe.
My list is backed up by code like this:
#FetchRequest(
entity: ...,
sortDescriptors: []
) var myList: FetchedResults<MyEntity>
and not by #State. Could this be an issue?
Below follows more of the relevant code, in case this may be useful:
private func deleteSpot(at index: IndexSet) {
print(#function)
}
.........
var body: some View {
VStack {
ForEach(self.myList, id: \.self.name) { item in
HStack {
Spacer()
Button(action: {
self.showingDestinList.toggle()
.....
UserDefaults.standard.set(item.name!, forKey: "LocSpot")
}) {
item.name.map(Text.init)
.font(.largeTitle)
.foregroundColor(.secondary)
}
Spacer()
}
}.onDelete(perform: deleteSpot)
}

Answer 1

The delete on swipe for dynamic container works only in List, so make
var body: some View {
List { // << here !!
ForEach(self.myList, id: \.self.name) { item in
HStack {
// ... other code
}
}.onDelete(perform: deleteSpot)
}
}

Answer 2

By searching and trying various options, I ended up by finding the issue.
I find the solution somewhat ridiculous, but to avoid other people to lose time, here it is:
The last part of the code in the post needs to be modified like the following in order to work.
var body: some View {
VStack {
List {
ForEach(self.myList, id: \.self.name) { item in
HStack {
Spacer()
Button(action: {
self.showingDestinList.toggle()
.....
UserDefaults.standard.set(item.name!, forKey: "LocSpot")
}) {
item.name.map(Text.init)
.font(.largeTitle)
.foregroundColor(.secondary)
}
Spacer()
}
}.onDelete(perform: deleteSpot)
}
}