Information in the progress window (example: rescan) is displayed capped to fixed size instead of contents.

<img width="209" alt="screenshot 2018-12-21 at 14 58 20" src="https://user-images.githubusercontent.com/26601261/50345943-0bbd4300-0531-11e9-9c6c-e277ac69eb0c.png">

{
    QMainWindow::changeEvent(e);
#ifndef Q_OS_MAC 
    if(e->type() == QEvent::WindowStateChange)
    {
        if(clientModel && clientModel->getOptionsModel() && clientModel->getOptionsModel()->getMinimizeToTray())
        {
            QWindowStateChangeEvent *wsevt = static_cast<QWindowStateChangeEvent*>(e);
            if(!(wsevt->oldState() & Qt::WindowMinimized) && isMinimized())
            {
                QTimer::singleShot(0, this, &BitcoinGUI::hide);
                e->ignore();
            }
            else if((wsevt->oldState() & Qt::WindowMinimized) && !isMinimized())
            {
                QTimer::singleShot(0, this, &BitcoinGUI::show);
                e->ignore();
            }
        }
    }
#endif
}
void BitcoinGUI::closeEvent(QCloseEvent *event)