Why does collection filter show only one product?

Pls check images. with admin page, when searching with collection fashion and vendor is Vivicastle they show more than 1 product, but if searching with collection filters, it shows 1. something is not right

@cuongvd
how may i help you?

Hi Zworthkey

We are an Online store vintage, we are looking to use Collection filters. We enabled as shown in the picture and followed https://shopify.dev/themes/navigation-search/filtering#filter-url-parameters. Results with searching by filter.p.vendor=Vivicastle are incorrect (we checked with admin/products?selectedView=all&collection_id=166691766362&vendor=Vivicastle). ID 166691766362 is collection fashion. the image that we sent above. Pls help me.