There should be a simple way to rearrange Multiple Select Items for a record.
Currently, it only seems to be possible if you have 4 or more items, as you can then click “…see more” and then rearrange them by dragging them.
But if you have less than 4 items, it doesn’t seem to be possible to drag them around.
This feature would be good, because the order the Items are listed is in the order of which they were created, which many times can be arbitrary. Sorting all records by a Multiple Select field for instance, does not rearrange all items following the first (primary one) in a logical order.