Category with sub category not showing in front-end

I have categories with sub-categories but when I create a module ... mod_easyblogcategories ... the top level category and sub-categories do not show in the front-end even though there are posts in the sub-categories (there are no posts directly to the top category).

I think the problem is that when an post is linked to a sub-category, the top category is not updated as having any posts and so if the module is set to not show empty categories, it ignores the top level category and does not show it or it's sub categories.

Is this the error and is there a fix for this ?

Thanks for the help