The endpoint returns the user's full name, comma separated, instead of the username for user picker field.
Please return the username instead because it is unique.
GET /rest/proforma/1/issue/{issueKey}/form/{formId}/answers
Related thread: https://community.atlassian.com/t5/Jira-Service-Management/Proforma-answers-API-returns-users-full-name-instead-of-username/qaq-p/1902597 for more details.
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