stopPeripheralScan does not work how it should work

Hey,

if I stopPeripheralScan and start it again I receive immediatly an error (16ms). Tested on iOS. So I have no idea what I am doing wrong but here is my code snippet:

  Future<bool> connectToButton() async {
    _bleManager = BleManager();
    await _bleManager
        .createClient(restoreStateIdentifier: bleConstants.restoreId)
        .catchError((e) {
      print("_bleManager got error: $e");
      return false;
    });

    await _checkPermissions().catchError((e) {
      print("_checkPermissions got error: $e");
      return false;
    });

    await _waitForBluetoothPoweredOn().catchError((e) {
      print("_waitForBluetoothPoweredOn got error: $e");
      throw BluetoothIsNotOnError();
    });

    await _startPeripheralScan().catchError((e) {
      print("_startPeripheralScan got error: $e");
      throw e;
    });

    _bleManager.destroyClient();
    return true;
  }

  Future _checkPermissions() async {
    try {
      if (Platform.isAndroid) {
        await Permission.location.request();
        var permissionStatus = await Permission.location.status;
        print(permissionStatus);
      }
      return Future.value();
    } catch (e) {
      return Future.error(PermissionNotGrantedError());
    }
  }

  Future _waitForBluetoothPoweredOn() async {
    try {
      Future<BluetoothState> future;
      future = _bleManager.observeBluetoothState().firstWhere((bluetoothState) {
        print(bluetoothState);
        if (bluetoothState == BluetoothState.POWERED_ON) {
          return true;
        } else {
          return false;
        }
      }).timeout(
        Duration(seconds: 3),
        onTimeout: () {
          return Future.error(BluetoothIsNotOnError());
        },
      );
      await future;
      return Future.value();
    } catch (e) {
      return Future.error(BluetoothIsNotOnError());
    }
  }

  Future _startPeripheralScan() async {
    try {
      ScanResult scanResult = await _bleManager
          .startPeripheralScan(uuids: [bleConstants.uuidButtonService])
          .first
          .timeout(
            Duration(seconds: 10),
            onTimeout: () {
              return Future.error(TimeOutError());
            },
          );
      print(scanResult);
      await _bleManager.stopPeripheralScan();
      _peripheral = scanResult.peripheral;
      return Future.value();
    } catch (e) {
      print(e);
      return Future.error(TimeOutError());
    }
  }

even when I replace the await _bleManager.stopPeripheralScan(); with _bleManager.stopPeripheralScan();it doesnt work.

What am I doing wrong? If I trigger the _startPeripheralScan() again after it failed it works again.

Best regards albo

dotintent / FlutterBleLib

stopPeripheralScan does not work how it should work #553