Scriptrunner Script Listener not working on Workflow Transition

Question

I use an Scriptrunner Script Listener to create sub-tasks. My script condition is as follows:

def subtaskIssueTypes = issue.getSubTaskObjects().collect {it.getIssueType().getName()}
(cfValues['Purge Stock']?.getValue() == 'Yes') && (!('Purge Parts' in subtaskIssueTypes))

So the condition above should return TRUE when the Purge Stock custom field value equals "Yes" AND when there is NOT already a Purge Parts sub-task created.

The Script Listener event is set to Issue Create and Issue Update. The Script Listener does NOT work when I change the custom field value to "Yes" on a workflow transition screen. However, it DOES work when I set the value to "Yes" on the issue CREATE screen and when changing the custom field value to "Yes" from the VIEW screen.

Any ideas why the transition screen isn't working?

Leonard Chew · Answer

I have posted a similar issue. Might be the same cause:
https://community.atlassian.com/t5/Jira-questions/Scriptrunner-Script-not-updating-native-fields-when-triggerd-by/qaq-p/1128707#M359308

Alexey Matveev · Answer

Have a look at the Create issue transition. What event do you throw there? Try to log the event name in the listener and have a look what happened.

log.error(ComponentAccessor.getEventTypeManager().getEventType(event.getEventTypeId()).getName())

Gavin Minnis · Answer

@Alexey Matveev

I tried adding the Generic Event along with the Issue Update event. When I did this, it caused the two sub-tasks to be created instead of one. So the good news is that the Generic Event did cause the sub-task to create on issue transition. But the problem is that it seems that the Issue Create and Generic Event each created a sub-task. Strange.