The classification type is not visible in the filter view, just the labels are displayed and we have no information which one belongs to C / to I / to A:
In the detail view the type is visible:
I would like to have three columns in the filter view with the classification type as header. Not sure if this really is a bug, could also be a new feature.
actually this is not a exactly a bug, at the moment filters could have a few limitations when displaying more “complex” content. Currently we are actively working on improving filters where we also plan to upgrade the way how content is shown - we will surely have a look on classifications too.