Obviously, you don't want to show all tag badges on the all badges page, but on earned badges, it makes since that would show what tag badges that I've actually earned, like it does here. Preferably, it would list each badge grouped together with others for the same tag (just as it groups other badges together).
On a more general note, the fact that you have to click on 'bronze badge', 'silver badge' or 'gold badge' before you can filter them through the any of the other tabs seems odd. For example, I think if you are on 'all badges' and you click the header for 'tag badges' it should take you directly here, without having to take the intermediate step through the bronze/silver/gold-badge list. It certainly wasn't obvious to me how to find the full list of tag badges with the new design, and I only discovered it by accident.