When creating a menu separator for a QMenu in Designer (for QMainWindow subclass), the Property editor shows the QObject::objectName, but the generated code does not include a QAction for the separator.

Generated code just adds the separator but throws away the created QAction.
There is no QAction *recentFileSeparator; declared in the ui_whatever.h file. (See attached image and file)

Example:

...
QAction *action_Settings;
QAction *actionE_xit;
QAction *action_OpenLayout;
QAction *action_About;
QAction *actionAbout_Qt;
...
menu_File->addAction(action_OpenLayout);
menu_File->addSeparator();
menu_File->addAction(actionE_xit);
...

Solution would be for Designer to generate a separate QAction for the menu separator too:

...
QAction *recentFileSeparator;
...
menu_File->addAction(action_OpenLayout);
recentFileSeparator = menu_File->addSeparator();
menu_File->addAction(actionE_xit);
...

Another issue is that the value of objectName in Property editor and in the Object Inspector is not consistent. (See image)