Need help with menubar primitive (Menubar.Portal)

[wencaizhang]

I use the Menubar.Portal like this:

<Menubar.Portal container={document.getElementById("div")}>
    <Menubar.Content>
    </Menubar.Content>
</Menubar.Portal>

or this

<Menubar.Portal container={elRef.current}>
    <Menubar.Content>
    </Menubar.Content>
</Menubar.Portal>

but they both not work. What should I do?

I expected the Menubar.Content part into container, I want use menubar in the DOM that can be fullscreened.

This is CodeSandbox demo

Open demo if click the fullscreen buttn: https://pv8jcx.csb.app/