UIActivityViewController - Close Button vs Slidedown - swiftui

Question

I noticed that there is a difference in the behavior of the UIActivityViewController when :
1: press the CLOSE (X) button up there, or
2: do a SLIDE DOWN to do the dismiss.
Pressing the button returns a nil value in activityType, doing a slidedown it returns nothing.
So I can't dismiss the ProgressView when I do a slide down.
Do you have any tips ?
import SwiftUI
struct ContentView: View {
#StateObject var vm = MainViewModel()
var body: some View {
ZStack {
Button {
withAnimation(.spring()) {
vm.showShareProgress.toggle()
vm.showShareAV.toggle()
}
} label: {
Text("share")
}
if vm.showShareProgress {
ProgressView()
.padding()
.background(.thinMaterial)
.cornerRadius(15)
.transition(.scale)
}
}
.sheet(isPresented: $vm.showShareAV, content: { ActivityViewController(itemsToShare: [vm.contentToShare as Any]) })
.environmentObject(vm)
}
}
final class MainViewModel: ObservableObject {
#Published var showShareAV: Bool = false
#Published var showShareProgress = false
#Published var contentToShare: Any?
}
struct ActivityViewController: UIViewControllerRepresentable {
#EnvironmentObject var vm: MainViewModel
var itemsToShare: [Any]
var servicesToShareItem: [UIActivity]? = nil
func makeUIViewController(context: UIViewControllerRepresentableContext<ActivityViewController>) -> UIActivityViewController {
let controller = UIActivityViewController(activityItems: itemsToShare, applicationActivities: servicesToShareItem)
controller.completionWithItemsHandler = { (activityType: UIActivity.ActivityType?, completed: Bool, arrayReturnedItems: [Any]?, error: Error?) in
print("Sharing activity : \(String(describing: activityType?.rawValue))")
if completed { print("sharing OK") }
else { print("sharing canceled") }
if let sharingError = error { print("Sharing error : \(sharingError.localizedDescription)") }
vm.showShareProgress = false
}
return controller
}
func updateUIViewController(_ uiViewController: UIActivityViewController, context: UIViewControllerRepresentableContext<ActivityViewController>) {}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
.environmentObject(MainViewModel())
}
}