https://github.com/bitcoin/bitcoin/blob/5180a86c96bc05d2a731f70f36aae28ab5a3fad4/src/qt/sendcoinsdialog.cpp#L339

I think this is %1, not %2
{
    setupTabChain(0);
    coinControlUpdateLabels();
}
void SendCoinsDialog::removeEntry(SendCoinsEntry* entry)
{
    entry->hide();
    
    if (ui->entries->count() == 1)
        addEntry();
    entry->deleteLater();
    updateTabsAndLabels();
}
QWidget *SendCoinsDialog::setupTabChain(QWidget *prev)
{
    for(int i = 0; i < ui->entries->count(); ++i)
    {
        SendCoinsEntry *entry = qobject_cast<SendCoinsEntry*>(ui->entries->itemAt(i)->widget());
        if(entry)
        {
            prev = entry->setupTabChain(prev);
        }
    }
    QWidget::setTabOrder(prev, ui->sendButton);
    QWidget::setTabOrder(ui->sendButton, ui->clearButton);
    QWidget::setTabOrder(ui->clearButton, ui->addButton);
    return ui->addButton;
}
void SendCoinsDialog::setAddress(const QString &address)