so i have a problem while testing demo content and filters.
1. Used demo import and deleted all content but not sliders/layouts.
2. Using now a “product archive layout Shop” so a custom layout is used
3. I did setup all filters i do need
4. Did set the Shop-Page to Start Page.
Now if i try to Filter on my Shop-Page it does try to filter refreshes the Page and the Page is empty.
I have disable the Custom Layouts under the Dashboard> Layouts >
The shop page filters is working fine, So, it seems that there is some third party Plugin element or some third party Custom Code added in your Custom Layout which is causing the filters to not work correctly.