The new design component cards add a way to follow the resource from the M-sized card, which is used in the resource list (eg, proposals list). This couldn't be done from the old cards.
This forced us to generate a new layout to add a way for users to follow the resource, but the HTML used for this uses a link, while Rails forces us to use a <button> element inside a form.
This is the closest implementation to the original design I could get using the CSS classes we already have:

AFAIK, we don't have any class that can be applied to buttons that remove the border.
I found the issue while working on #3338 implementing the proposal cards.
I see two options:
masterI assume @decidim/product will want to keep the feature.
@Crashillo can you help me here? 馃槥
I assume @decidim/product will want to keep the feature.
@mrcasals yes, let's find a solution to keep it. The follow feature is especially useful in the card list since it allows you to quickly select items you want to receive feedback from.
@carolromero perfect, thanks! I'm already talking to @Crashillo to see if we can find a solution 馃槃
Solved on #3338!
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Solved on #3338!