[Hummingbird Pro] HummingBird admin styles loaded on front end

Is there any reason that hummingbirds admin styles are loaded on the front end website?
plugins/wp-hummingbird/admin/assets/css/critical.css?ver=2.3.0

When testing performance I notice the above file on the front end. But it is labelled in admin/assets. Any reason you load that on front end and not only in admin?