Mac: Menu action shortcut not visible after changed

Changing the name AND shortcut to an action menu item at runtime does not change the shortcut at all. This seems to happen only when using native menu bar. I also noticed that when changing only the shortcut, it does seem to update on menu item.

Please find the attached example application to demonstrate this issue.

Steps to reproduce:
Launch the app
Open "Edit" menu and select Copy
Open "Edit" menu again and observe, Copy menu item renamed to CopyCopy and there is no shortcut visible