hy,
i've created a test page https://www.marcelloballardini.it/it/test-error-filters
As you can see, the page displays products in the "didjStar" category, and you can see for yourself that if you try to tap on one of the other categories and/or tags that don't belong to products in this category (e.g., "quadri luminosi"), it returns "No results found."
The same thing happens if you click on tags that don't belong to products in this category (e.g., "artistic wall sconces"), it returns "No results found."
This makes no sense because otherwise the filters could only be used on the main shop page and not in the individual categories.
video error
I believe that categories should work in any case and link to the relevant products.
The same goes for tags...
Or, if that's not possible, at the very least, only tags related to products in that category should be shown.