Touch events not fired after QDialog closed with ESC, ⌘-. or Return

    Application* applicationInstance = Application::getInstance();
    QDialog* dialog = new QDialog(applicationInstance->getWindow());
    dialog->setWindowTitle("Login");
    
    QBoxLayout* layout = new QBoxLayout(QBoxLayout::TopToBottom);
    dialog->setLayout(layout);
    
    QFormLayout* form = new QFormLayout();
    layout->addLayout(form, 1);
    
    QString username = applicationInstance->getProfile()->getUsername();
    QLineEdit* usernameLineEdit = new QLineEdit(username);
    usernameLineEdit->setMinimumWidth(QLINE_MINIMUM_WIDTH);
    form->addRow("Username:", usernameLineEdit);
    
    QDialogButtonBox* buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
    dialog->connect(buttons, SIGNAL(accepted()), SLOT(accept()));
    dialog->connect(buttons, SIGNAL(rejected()), SLOT(reject()));
    layout->addWidget(buttons);
    
    int ret = dialog->exec();
    
    if (ret == QDialog::Accepted) {
        if (usernameLineEdit->text() != username) {
            // there has been a username change
            // ask for a profile reset with the new username
            applicationInstance->resetProfile(usernameLineEdit->text());
        }
    }
    
    delete dialog;