Hiding pattern sub groups ignored

I am using Pattern Lab Node v5.15.1 on Linux, with Node v16, using a Twig Edition.

Expected Behavior

If I add components/buttons/_buttons.md with the content:

---
hidden: true
---

That the “Buttons” group does not appear in the output of the documentation.

Relevant part of the patternlab documentation: https://patternlab.io/docs/hiding-patterns-in-the-navigation/#heading-hiding-pattern-sub-groups

Actual Behavior

The option seems to be ignored for a whole folder. At least for the Twig edition.

Hiding single files works as documented.

Steps to Reproduce

1. Create a sub group structure e.g. “components/buttons”.
2. Add a test twig file to that folder, e.g. “components/buttons/test.twig” with some content.
3. This appears in the documentation under the menu “components” as “buttons” then “test”.
4. Now add components/buttons/_buttons.md with the content above (as in the expected behaviour.
5. The components -> buttons group should now no longer appear in the documentation menu. For me, it still does

Simplified example.

[renestalder]

@mfranzke I have quickly set up a project with handlebars and the demo project, added a _forms.md to the atoms folder with the hidden attribute set, and unless I did something wrong, it also seems to fail in a handlebars project. The forms menu with it’s sub components still appears in the UI.

[JosefBredereck]

Thanks for the analysis and the very well-written issue. I created a PR for this topic; sorry for the inconvenience. 🍺