There is no easy way to attach a listener to an element being dragged when a tabledrag widget is being used.
I needed this functionality to have a lightweight listener on an element of a tabledrag being dragged so I added a small patch.
Needs work
11.0 🔥
The change is currently missing an automated test that fails when run with the original code, and succeeds when the bug has been fixed.
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I rewrote the patch to trigger a change event a. without jQuery and b. on the select element carrying the delta instead of the row div. That makes more sense IMO.