xamarin.forms android Bluetooth.ScanForDevicesAsync Wait forever

[bbhxwl]

private async void MainPage_Appearing(object sender, EventArgs e)
        {
            try
            {
                var s = await Bluetooth.ScanForDevicesAsync();
            }
            catch (Exception ex)
            {

                
            }
         
           
        }

[peterfoot]

This should be resolved in 4.0.23.