Can't get a scoped resource URL from drag and drop

Hi,

My Mac app allows a customer to drag and drop a file package onto a SwiftUI view. I can't seem to find a way to successfully call .startAccessingSecurityScopedResource() with the file/dir that was dropped into the view.

I put together a simple test app. Here is the code:

struct ContentView: View {
    
    @State var isTargetedForDrop: Bool = false
    
    var body: some View {
        VStack {
            Image(systemName: "globe")
                .imageScale(.large)
                .foregroundStyle(.tint)
            Text("Hello, world!")
            Rectangle()
                .stroke(Color.gray)
                .onDrop(of: [UTType.fileURL], isTargeted: $isTargetedForDrop) { providers in
                    guard let provider = providers.first(where: { $0.hasItemConformingToTypeIdentifier(UTType.fileURL.identifier) }) else {
                        return false
                    }
                    provider.loadItem(forTypeIdentifier: UTType.fileURL.identifier, options: nil) { item, error in
                        if let error = error {
                            print("Drop load error: \(error)")
                            return
                        }
                        if let url = item as? URL {
                            print("Dropped file URL: \(url)")
                        } else if let data = item as? Data,
                                  let url = URL(dataRepresentation: data, relativeTo: nil) {
                            print("Dropped file URL (from data): \(url)")
                            let access = url.startAccessingSecurityScopedResource()
                            if access {
                                print("Successfully accessed file at URL: \(url)")
                            } else {
                                print("Failed to access file at URL: \(url)")
                            }
                            url.stopAccessingSecurityScopedResource()
                        } else {
                            print("Unsupported dropped item: \(String(describing: item))")
                        }
                    }
                    return true
                }
        }
        .padding()
    }
}

When I drop a file package into this view I see, "Failed to access file at URL: <the_full_file_path>"

I'm running Xcode 26 on macOS 26.