Workflow User Task State Change - Event Handler Trigger

The event handler that you configure in App settings > Workflow for changes to a user task does not seem to get triggered when you make a change to the assignee association. Is there a reason for this?   I notice that Workflow Commons has a workaround for this by explicitly recopying the assignee association to its view object. But it should be unnecessary if the event triggered for such a change.
1 answers

Not sure if I understand your question exactly but the User task State Change only triggers on a state change of the task, so a pause or complete for example. A change of the assignee is not such a thing as far as I know