What is the category posting page, see the image.
I created multi-site ex) affinity designer and affinity photo, but when I post any items on the category page. When I select affinity design or affinity photo, the category items always display all. Maybe it doesn't work. Craft 3 ver is 3.2.6., PHP 7.3, XAMPP, Win 10.
At present, even if I change sites in multi-site, category registration displays everything without distinction for each site.