Moving static list items on small screen resolutions is not working well

StaticListClassFieldTest#testItemsEditor is failing because of the way the list configuration items reordering work.
More specifically, during a drag-and-drop to reorder the list items, moving an element to the desired position can be difficult (even manually).
Consequently, writing a selenium interaction is difficult, making the test fail because the moved item does not end up in the expected position (second position instead of first).

Proposed solutions (not exclusive):
1. Find a way to write a deterministic selenium interaction
2. Improve the UX to make it easier to reorder the items, especially on small screens