Issues with Sortable and Bootstrap 5 responsive

I know this component is pretty old, and I'm not sure to what extent it's still supported.

I'm trying to use it on a Boostrap 5 responsive page and am hitting the following issues.

1. My list consists of a series of <div class="col-lg-6"> elements. So it shows two per row. But if I drag an element from the left side to the right-side element, nothing happens. In order to swap the two elements, I must also drag the element down. This is not intuitive. Is there a workaround?
2. When I show it on a mobile device (only one element per row), no dragging or sorting whatsoever is visible.
3. Despite explicitly setting scroll: true, no scrolling occurs if I drag an element to the bottom of the browser window. Are additional steps required.

Note: I tried created a CodePen to show all this but was unable to find a CDN for the sortable components. If someone knows how to do this, my CodePen is at https://codepen.io/softcircuits/pen/QWBWwwJ.

Start by reproducing the three reported Sortable behaviors with the Bootstrap 5 responsive layout and the linked CodePen example. Compare desktop, mobile, and edge-of-window dragging, then document or fix the behavior so horizontal swapping, mobile sorting, and scrolling have clear working outcomes.