[BlueZ] Unpair request blocks within ~2 seconds when I/O is active

QBluetoothLocalDevice::requestPairing(address, QBluetoothLocalDevice::Unpaired) 

static QElapsedTimer et;

Foo:Foo() 
{
    connect(localDev, &QBluetoothLocalDevice::pairingFinished, []() {
        qDebud() << "Elapsed in slot:" << et.elapsed;
    }
}

void doUnpair()
{
    et.start();

    localDev->requestPairing(QBluetoothAddress(deviceAddress),
                                  QBluetoothLocalDevice::Unpaired);

    qDebug() << "PAIR: elapsed in end" << et.elapsed();
}