Next Custom Column Order
What we have seen Elementor page Builder does not put enough control to manage column order on responsive mobile view. But when you will work with plenty of columns on your web pages, you must have to set column order for all responsive mode.
When you edit culumn with Next Addons, then Next Custom option will be appear under layout. Then you need to go to 'order' and set the column order by 1, 2, 3------with responsive mobile view.