I’ve tried out the new filtering option in my portfolio archive using CS Form and Ajax. It works fine so far, as long as you’re not on a paginated page with “page” parameters in the url. So, if I’m on page 2 or higher in the archive, the Ajax filter no longer works.
That seems only to work if you set up the pagination navigation inside the target Ajax container. Otherwise, the pagination will still be displayed with the original query amount of pages and breaks the ajax filter.
Maybe you can add a warning in the documentation to mention this.