Sub Category Products Showing In Parent

Here's an example:

I have Category A and Subcategory A

All products are within Subcategory A but they also display on the category page for Category A - this is in version 4, previously used version 2 and this feature/issue did not exist.

Has anyone managed to get rid of this functionality?

Turn off “Show products from subcategories of the selected category:” in the Catalog section of the General Settings.

Must have looked through those options about 10 times and still missed it! Thanks a lot - works perfectly.