QDialog exec locks sending messages on QCan Device

Hello everyone,

I discovered a bug that it verifies when I try to open a QDialog and at the same time I send a keep-alive message to a device on QCanbus.

I think that the QDialog locks the main event loop and consequently the keep-alive message sending.

This bug does not occur on QSerial and QTCP.

As a workaround, we used a QDialog not native but this component is affected by reading issues and file system accessing issues.

    int id_device = serialCom->getConnectioType();

    if(id_device != ControllerCom::CAN_DEVICE){
        //NO CAN-PEAK: QFileDialog Native (Windows)
        dlgSel->exec();
    }else{
        //CAN-PEAK: QDialog not native - doesn't lock sending message on QCan Device 
        //but it is affected by file reading issues
        dlgSel->show();
    }

Could you help us to understand and solve this bug?

Regards,