ios – SwiftUI: dismissing `ActionSheet` or `sheet` dismisses its parent view

I have a view FooView in a navigation stack presented via a NavigationLink.

Now FooView has a button that will trigger a ActionSheet:

struct FooView: View {
    @State private var showActions = false

    var body: some View {

<snip>

            Button(action: {
                showActions = true
            }) {
                Image(systemName: "arrow.up.circle")
            }
            .actionSheet(isPresented: $showActions) {
                ActionSheet(title: Text("Actions"),
                            message: nil,
                            buttons: [
                                .default(Text("Option 1")) {
                                    // TODO
                                },
                                .default(Text("Option 2")) {
                                    // TODO
                                },
                                .cancel()
                            ])
            }

The problem is: when the ActionSheet is dismissed (either cancelled or selected option), its parent view, i.e. FooView is also dismissed, i.e. pops up from the navigation stack.

Is there a way to prevent it doing that?

More importantly, why is this happening? What triggers FooView going away?

iOS version: iOS 15 on iPhone
XCode: 14.2