Grid Scrolling and Column Resizing Specifics
When ASPxCardView uses vertical scrolling, it renders a table with a fixed table layout. A browser calculates a grid’s dimensions to display this grid on a page. If there aren’t any dimension properties defined in the ASPX markup (such as a grid’s ASPxWebControl.Width, its columns’ WebColumnBase.Width, etc.), then rendered tables have their minimal width defined by the browser, so that they can appear collapsed.
Therefore, the width dimension properties should be specified if you use scrolling.