Partial category assignments not visible during mass category assignment

Why in the current version of eMagicOne for PrestaShop are partially assigned categories not displayed during bulk category assignment?

This functionality was available in older versions but is no longer present. When multiple products are selected a category is shown as assigned only if all selected products are assigned to it. As a result if even one product in the selection has a different or incorrect category assignment this inconsistency is not visible and cannot be easily detected.