If the main window has been minimized to the taskbar (iconified) calling "Show/Hide", "Send" or "Receive" actions from the tray icon menu has no effect: the main window still minimized.

It seems like a Qt bug similar to that old [one](https://bugreports.qt.io/browse/QTBUG-31117).

Tested platform: Linux Mint 19, Qt 5.9.5 / 5.9.6
{
    
    openRPCConsoleAction->setEnabled(true);
    aboutAction->setEnabled(true);
    optionsAction->setEnabled(true);
}
#ifdef ENABLE_WALLET
void BitcoinGUI::incomingTransaction(const QString& date, int unit, const CAmount& amount, const QString& type, const QString& address, const QString& label, const QString& walletName)
{
    
    QString msg = tr("Date: %1\n").arg(date) +
                  tr("Amount: %1\n").arg(BitcoinUnits::formatWithUnit(unit, amount, true));
    if (m_node.getWallets().size() > 1 && !walletName.isEmpty()) {
        msg += tr("Wallet: %1\n").arg(walletName);
    }
    msg += tr("Type: %1\n").arg(type);
    if (!label.isEmpty())
        msg += tr("Label: %1\n").arg(label);
    else if (!address.isEmpty())
        msg += tr("Address: %1\n").arg(address);
    message((amount)<0 ? tr("Sent transaction") : tr("Incoming transaction"),
             msg, CClientUIInterface::MSG_INFORMATION);
}
#endif 
void BitcoinGUI::dragEnterEvent(QDragEnterEvent *event)