At the moment, JIRA cascading field is not a supported field on the Create & Review screen:
https://docs.servicerocket.com/salesforce-jira/user-guide/working-with-associations/creating-a-jira-issue-from-salesforce#CreatingaJiraIssuefromSalesforce-supported-fieldsNotesonsupportedfields
Please make it supported.
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Immanuel Siagian
