Hola!
Recently, the team and I discovered a not very clear behavior
We pass an object (best described as something like slots) with functions returning jsx to the function

const Wrapper = () => createPage({ 
    header: () => <header />,
    footer: () => <footer />,
    content: () => <content />,
})

but babel transpiles it into a functional component (something like sample below)

const Wrapper = {
  functional: true,
  render: (h) => createPage({ 
    header: () => <header />,
    footer: () => <footer />,
    content: () => <content />,
})
};

which poorly satisfies our requirements since createPage is not returning vnode

maybe I don’t fully understand all cases of babel-sugar-functional-vue usage (correct me if I'm wrong please), but I think that this is an undesirable behavior for all users, because the package documentation tells only about the transpilation of arrow functions which return JSX