Migrating to Storybook 8 (vue3-vite), how to connect controls to custom render template components?

[SmilingJoe]

Summary

Using the latest Storybook 8 with @storybook/vue3-vite framework. In the process of upgrading from an extensive Storybook 5 / Vue 2 implementation.

Several of our SB5 implementations make use of custom render templates. I am having trouble figuring out how to connect the SB8 component adjustment controls, to the components in the custom render template.

For example, using the base Button.vue tutorial component that comes installed, this story example is an attempt to connect the "size" adjustment control, into a custom render template component, but it doesn't work, generating the Vue warning message [Vue warn]: Property "size" was accessed during render but is not defined on instance.

import MyButton from './Button.vue';

export default {
    title: 'Components/MyButton',
    component: MyButton,
    tags: [ 'autodocs' ],
    argTypes: {
        size: {
            control: {
                type: 'select'
            },
            options: [ 'small', 'medium', 'large' ]
        }
    }
};

export const Default = {
    name: 'Default Button',
    render: args => ({
        components: { MyButton },
        setup() {
            return { args };
        },
        template: '<my-button :size="size" label="Button Text"></my-button>'
    })
};

How can I connect up the component adjustment controls to the storied component?

Additional information

Storybook Version: ^8.0.8

My .storybook/main.js file:

const config = {
  stories: [
    "../stories/**/*.mdx",
    "../stories/**/*.stories.@(js|jsx|mjs|ts|tsx)"
  ],
  addons: [
    "@storybook/addon-links",
    "@storybook/addon-essentials",
    "@chromatic-com/storybook",
    "@storybook/addon-interactions",
  ],
  framework: {
    name: "@storybook/vue3-vite",
    options: {},
  },
  docs: {
    autodocs: "tag",
  },
};
export default config;

Create a reproduction

https://stackblitz.com/edit/github-pgdwht?file=src%2Fstories%2FMyButton.stories.js