I try creating as list with drag and drop ordering as described here: https://www.seblod.com/resources/tutorials/adding-drag-and-drop-ordering-functionality-to-your-front-end-managers
I use Joomla 4 with Seblod 4, exactly identical configuration as in another installation of Joomla 3. I think the former field "CCK" now is called "Core ID". In Joomla 4 I can drag a list item, but with mouseup, the item jumps back to the former position.
Dragging works, but the positions don't flip. Also in Joomla administration after dragging, there's an AJAX call like http://www.mydomain.com/administrator/index.php?option=com_content&task=articles.saveOrderAjax&tmpl=component&abcabcabcabcabcabcabc=1 . Seblod doesn't send the call.