INSendMessageIntent suggestions always show "1 person", even for multiple recipients

• Click "Donate Group Without Images" => share sheet suggestion shows 3 bubbles but says "1 Person"

• Click "Donate Group With Individual Images" => share sheet suggestion shows the first person's image (the letter A), not all 3 images, and still says "1 Person"

• Click "Donate Group with One Image" (...using undocumented setImage:forParameterNamed:...) => share sheet suggestion correctly shows the single group image, but still says "1 Person".

1. Create a new SwiftUI app with the below code as ContentView.swift.

2. Edit Info.plist to include NSUserActivityTypes: ["INSendMessageIntent"]

3. Add a share extension target; edit the target to add INSendMessageIntent under Supported Intents.

4. Run the app on a device. (Share sheet suggestions don't seem to work in the simulator.)

5. Try clicking the buttons to donate intents, and then clicking the share button to activate the share sheet.

Code Block 
import SwiftUI
import Intents
import IntentsUI
struct ActivityVC: UIViewControllerRepresentable {
  func makeUIViewController(context: Context) -> some UIViewController {
    return UIActivityViewController(activityItems: [UIImage(systemName: "photo")!], applicationActivities: nil)
  }
  func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {}
}
struct ContentView: View {
  @State var showActivityVC = false
   
  var body: some View {
    VStack(spacing: 24) {
      Button("Donate Single Without Image") {
        let person1 = INPerson(personHandle: INPersonHandle(value: "Aid", type: .unknown), nameComponents: nil, displayName: "A", image: nil, contactIdentifier: nil, customIdentifier: "Aid")
         
        let intent = INSendMessageIntent(recipients: [person1], outgoingMessageType: .outgoingMessageText, content: nil, speakableGroupName: INSpeakableString(spokenPhrase: "Single"), conversationIdentifier: "1", serviceName: nil, sender: nil, attachments: nil)
         
        INInteraction(intent: intent, response: nil).donate { (err) in
          print("Donated single without image: \(err as Any)")
        }
      }
      Button("Donate Group Without Images") {
        let person1 = INPerson(personHandle: INPersonHandle(value: "Aid", type: .unknown), nameComponents: nil, displayName: "A", image: nil, contactIdentifier: nil, customIdentifier: "Aid")
        let person2 = INPerson(personHandle: INPersonHandle(value: "Bid", type: .unknown), nameComponents: nil, displayName: "B", image: nil, contactIdentifier: nil, customIdentifier: "Bid")
        let person3 = INPerson(personHandle: INPersonHandle(value: "Cid", type: .unknown), nameComponents: nil, displayName: "B", image: nil, contactIdentifier: nil, customIdentifier: "Cid")
         
        let intent = INSendMessageIntent(recipients: [person1, person2, person3], outgoingMessageType: .outgoingMessageText, content: nil, speakableGroupName: INSpeakableString(spokenPhrase: "NoImages"), conversationIdentifier: "2", serviceName: nil, sender: nil, attachments: nil)
         
        INInteraction(intent: intent, response: nil).donate { (err) in
          print("Donated group without images: \(err as Any)")
        }
      }
      Button("Donate Group With Individual Images") {
        let person1 = INPerson(personHandle: INPersonHandle(value: "Aid", type: .unknown), nameComponents: nil, displayName: "A", image: INImage(uiImage: UIImage(systemName: "a.circle.fill")!), contactIdentifier: nil, customIdentifier: "Aid")
        let person2 = INPerson(personHandle: INPersonHandle(value: "Bid", type: .unknown), nameComponents: nil, displayName: "B", image: INImage(uiImage: UIImage(systemName: "b.circle.fill")!), contactIdentifier: nil, customIdentifier: "Bid")
        let person3 = INPerson(personHandle: INPersonHandle(value: "Cid", type: .unknown), nameComponents: nil, displayName: "C", image: INImage(uiImage: UIImage(systemName: "c.circle.fill")!), contactIdentifier: nil, customIdentifier: "Cid")
         
        let intent = INSendMessageIntent(recipients: [person1, person2, person3], outgoingMessageType: .outgoingMessageText, content: nil, speakableGroupName: INSpeakableString(spokenPhrase: "SeparateImages"), conversationIdentifier: "3", serviceName: nil, sender: nil, attachments: nil)
         
        INInteraction(intent: intent, response: nil).donate { (err) in
          print("Donated group with individual images: \(err as Any)")
        }
      }
      Button("Donate Group with One Image") {
        let person1 = INPerson(personHandle: INPersonHandle(value: "Aid", type: .unknown), nameComponents: nil, displayName: "A", image: nil, contactIdentifier: nil, customIdentifier: "Aid")
        let person2 = INPerson(personHandle: INPersonHandle(value: "Bid", type: .unknown), nameComponents: nil, displayName: "B", image: nil, contactIdentifier: nil, customIdentifier: "Bid")
         
        let intent = INSendMessageIntent(recipients: [person1, person2], outgoingMessageType: .outgoingMessageText, content: nil, speakableGroupName: INSpeakableString(spokenPhrase: "OneGroupImage"), conversationIdentifier: "4", serviceName: nil, sender: nil, attachments: nil)
         
        // This "forParameterNamed: \.speakableGroupName" is totally undocumented, but following the example from: https://developer.apple.com/documentation/foundation/app_extension_support/supporting_suggestions_in_your_app_s_share_extension
        intent.setImage(INImage(uiImage: UIImage(systemName: "g.circle.fill")!), forParameterNamed: \.speakableGroupName)
         
        INInteraction(intent: intent, response: nil).donate { (err) in
          print("Donated group with one image: \(err as Any)")
        }
      }
      Button("Delete All") {
        INInteraction.deleteAll { (err) in
          print("Deleted: \(err as Any)")
        }
      }
       
      Spacer().frame(height: 24)
       
      Button(action: { showActivityVC = true }) {
        Image(systemName: "square.and.arrow.up")
      }
    }
    .sheet(isPresented: $showActivityVC) {
      ActivityVC()
    }
  }
}
struct ContentView_Previews: PreviewProvider {
  static var previews: some View {
    ContentView()
  }
}