Filter Entire Document Library

I have a Document Library with multiple folders and sub-folders that I would like to filter on.  I created a "CHOICE" column which can be assigned different categories (e.g. Category A, Category B, Category C....)

I would like to apply a filter to the Root folder and see only those folders (or items in the Root folder) which contain items assigned with, say, Category A.  The issue I have is that if the Root folder itself doesn't have any items assigned as Category A, then the resulting file list is blank EVEN THOUGH there are item in sub-folders of the Root folder that DO have items assigned with Category A.

Is there a fix for this?