Math.floor was used instead of Math.round to round down.

Author: nurullah

app/code/Magento/PageBuilder/view/base/web/js/content-type/products/appearance/carousel/widget.js

@@ -27,7 +27,7 @@ define([
             $carouselElement.slick('unslick');
         }
 
-        config.slidesToScroll = Math.round(config.slidesToShow);
+        config.slidesToScroll = Math.floor(config.slidesToShow);
         $carouselElement.slick(config);
     }