How to use the render function in vue-next

[Weeb6279]

Version

3.0.0-alpha.4

Reproduction link

https://codesandbox.io/s/github/vuejs/vue-next-webpack-preview

Steps to reproduce

How is it possible to use a render function in a component?

using render() { return h("div", "children");} on the same level as setup does not work.

What is expected?

children should be rendered

What is actually happening?

Nothing happens.

[yyx990803]

Fixed in vue-loader@16.0.0-alpha.3