macOS: MenuBar creates invisible but focusable ghost item

When using a MenuBar on macOS, the menu bar is shown correctly on top of the screen and not as part of the UI. However, when enabling Full Keyboard Access in the macOS System Settings and iterating through the controls via "Tab", the hidden menu bar item is selected and highlighted.

I've tried I think all combinations of focus: false, activeFocusOnTab: false, Accessibility.ignored: true without effect.

If I make the menu text longer, the item gets wider, so this seems to be the menu that would be visible on other platforms, but is hidden on macOS.