SwiftUI bug using .sheet(item:) and button action not called

import SwiftUI

extension Int: Identifiable {
    public var id: Int { return self }
}

struct ContentView: View {
    @State var shareSheet: Bool = false
    @State var selectedNo : Int?
    
    
    var body: some View {
        VStack {
            ForEach(0..<2, id: \.self, content: { rowNo in
                Text("world \(rowNo)")
                Button(action: {
                    shareSheet.toggle()
                        selectedNo = rowNo
                }) {
                    Text("Go to world\(rowNo)")
                }
            })
            
        }
        .padding()
        .sheet(item: $selectedNo) { row in
// BUG: when replacing 'row' below with 'selectedNo' nil is passed.
                ShareView(message:"Hello \(row)" )
            }
    }
    
    struct ShareView: View {
        let message: String
        var body: some View {
            Text(message)
        }
    }
}