Since we are using a parent/child structure for categories, why don't products show up when filtering by parent categories? Example:
All Products / Phones / Android / Product Name
When filtering by
All Products / Phones / Android, Product Name will appear in the results. When filtering by
All Products, there are no results. This shouldn't be happening since it is a parent/child structure and all products in the Android Category are by default in the All Products category.