On the card page, when you click on "Core", "Addons" or "Community" categories, the result is not correct

On individual cards, there is a link at the top to sort by category. When you click on the broader categories (e.g. core, addons, community), the result is not correct. What seems to be happening is that the filter is set to Core and all the subcategories under core. The first call to the filters is correct. I think the UI is then updated and a second call to the filter is done. This time, it passes Core,Addons,Community and all the subcategories under core. This happens because there are some subcategories that are the same in all three areas. The result is that you show more than just Core projects.

If you perform this same function in the filtering UI, you will see that Core and all the subcategories are selected. The overlapping subcategories are also checked under Addons and Community. But, the top level Addons and Community are not checked. So, the filter works ok. This is the expected behavior.