If the page moves up or down on click the navigation buttons (next, previous) of Scrollable list, it means there was a custom Javascript handle of theme or another plugin attached to these buttons.
To resolve this issue, please add this code to Custom JS field in Content Views >> Settings page:
/* Content Views - Fix page scrolls on click next/previous button of Scrollable List */
setTimeout(function() {
$('.pt-cv-scrollable .carousel-control').off('click');
}, 2000);
If you are using Content Views Free, please add above code with this instruction (click here).
Best regards,
