Partial: SCSS wins over HAML

Take this very simple setup:

source
    component
        _component.haml
        _component.scss
    index.html.haml

In index.html.haml:

= partial "component/component"

This will include (and process) the SCSS partial. And well, I really don’t want that and don’t expect it. I know for sure that in earlier versions of Middleman (3 for sure) this wasn’t the case, partial called from within HAML would always prefer the HAML partial. Is this a bug and is there a workaround or do I have to live with it? (argh!)