Button cards from Koenig editor do not render in frontend on Digest theme

Themes
1

I’m using Ghost with the Digest theme on a self-hosted setup (DigitalPress).

When I add a Button Card (Koenig editor) inside a post, it appears correctly in the editor and I can edit it normally. However, once the post is published, the button does not appear at all in the frontend.

To debug this, I checked the rendered HTML:

  • In the editor, the button exists as data-kg-card="button"

  • After publishing, the button is completely missing from the frontend DOM (it does not render at all, not even hidden)

  • Other Koenig cards like Callout and Subscribe CTA render correctly

  • No CSS rules seem to be hiding it (I already inspected with dev tools)

This suggests the Button Card is being stripped or not rendered by the theme.

I’m not sure if:

  • Digest theme does not support Button Cards

  • or if there is a missing {{content}} rendering or Koenig compatibility issue in the theme templates

Has anyone seen this behavior or knows if Button Cards are supported in Digest?