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Changes between Initial Version and Version 1 of Ticket #31885

-                      initial
+                      v1
 When a widget is updated in the Customizer, the form values are serialized and sent via Ajax to pass through the widget's update callback. The widget form with the sanitized values is then sent in the Ajax response. The form inputs in the Ajax response are then copied over from the response into the existing form. This sync logic, however, does not account for the special case of `select[multiple]` inputs which lack a single `value` to synchronize: the value to synchronize is an array of zero or more values.
+The issue with synchronizing the `selected` state among a `select[multiple] option` elements is particularly evident when the widget's underlying setting is changed programmatically, as opposed to direct user input. Here is a demonstration of the issue by using a widget undo/redo feature: https://cloudup.com/cuSHMWiSgdM
+The issue with synchronizing the `selected` state among a `select[multiple] option` elements is particularly evident when the widget's underlying setting is changed programmatically, as opposed to direct user input. Here is a demonstration of the issue by using a widget undo/redo feature: https://cloudup.com/i7oo4v3X0v6
+Plugin used in demo is attached to ticket.
 Big props to [https://github.com/davidlonjon davidlonjon] for discovering this issue and suggesting a fix.