Anchor categories are showing products of disabled subcategories

[koenner01]

Categories that are set to anchor 'Yes' and have disabled subcategories will show the products from those disabled subcategories on the frontend

Preconditions

1. PHP7.0
2. MG2 2.1.x (tested on 2.1.2, 2.1.4 and 2.1.5)

Steps to reproduce

1. Create a simple product 'Test' that is in stock and visible on catalog
2. Create a category A (don't add products to it)
3. Create a subcategory B (parent is A) and add our 'Test' product to it
4. Goto category A on frontend

Expected result

1. Category A should not have any products results

Actual result

1. Category A is showing our 'Test' product

I did some digging into this issue and found a post from 2013 about MG1 having this exact same problem (https://www.proxiblue.com.au/blog/Collection_of_products_in_all_child_categories/).

[smoskaluk]

Internal ticket MAGETWO-70303 is created

Is there any update on this issue?
In this scenario the Test product should definitly not be visible in Category A if Category B is disabled... From my point of view this is a serious problem!

[adavis0000]

I am investigating this issue also, on EE 1.14. It definitely feels like a bug and not a feature. Disabling a subcategory should certainly break the association of any products in it to the parent category.