QLineEdit cut operation misbehavior

QLineEdit cut operation(CTRL+X) is not disabled when there is no selection.
Here is the code and steps how to reproduce the problem.

Steps how to reproduce:
1. Launch application
2. Move cursor position to start
3. Launch context menu and you can see "Cut" is disabled. Close the context menu.
4. Press CTRL+X

Actual result:
4. Text is cut off even when there is no selection.

Expected result:
4. Shortcut combination should be disabled when there is no selection.

#include "mainwindow.h"
#include <QApplication>
#include <QLineEdit>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QLineEdit *le = new QLineEdit;
    le->setText("abcdefgh");
    le->show();
    return a.exec();
}

Patch proposals attached.