Additional (Customer visible) for the Additional Comments field on the Comments and Work Notes tab is duplicatedIssue Additional (duplicated) (Customer Visible) in the labels of the Additional comments: ReleaseAny Release.CauseThis can be caused by the Custom script that set comments field: ResolutionTry searching sys_script_client.list for the scripts that use setLabelOf call and comments field, for example and adjust the script accordingly.