QAction triggered in QMenu within QMenuBar even though the QMenu's menuAction is hidden/disabled.

As described in the documentation for QAction :

"An action will be disabled when all widgets to which it is added (with QWidget::addAction()) are disabled or not visible. When an action is disabled, it is not possible to trigger it through its shortcut."

To reproduce (see qtbug25743):

• Add a QMenu to a QMenuBar
• Add an action with shortcut to the QMenu
• call setVisible(false)/setEnabled(false) on the menu's menuAction()
• Invoke shortcut: The action still fires

Note that for example for a menu added to a QPushButton, the action no longer fires if the button is invisible/disabled.