Recalculate handle position if sortable group changes after drag start

[fran-worley]

Describe the bug
My sortable group is made up of a series of bootstrap cards (fancy squares) which can become quite long so I'd set these up to collapse on drag start to make them easier to move around.

What seems to happen is that the sort item gets separated from the cursor (see screenshot) making it nearly impossible to drag the items around.

Expected behaviour
I would expect the sort item to remain stuck to the cursor.

Screenshots
See video screenshot for example:

Additional context
I'm wondering whether an event on the sortable group might be the answer here... and apply this action before actually starting the dragging transitions etc.