Product count in category list widget

Hello,

Let’s say I have such a category tree, and hide the products from cat. “Ac” :
A
> Ab
> Ac [Hidden]

B
> Ba
> Bb

And let’s say I have a products with categories “Ac” and “Bb”.
Let’s even say it’s the only product I have.

In the category widget, the sum for “Bb” will count that product, although it’s hidden because of its Ac category (expected), and will display “Bb (1)” (unexpected), although it won’t show nothing when we click on it.

Is there a workaround for this?

Thank you !