I'm trying to develop some components to use with MJML.

I've tried cloning the following example project: https://github.com/mjmlio/mjml-component-boilerplate

When following the instructions, the custom component will not render in the extension preview, nor is it rendered with the HTML which is generated with this extension.

It is rendered in the HTML generated by the Gulp-script in that project though.

Does this extension inspect the .mjmlconfig which defines the component? Or is it some other issue?

From VSCode: