X-Frame-Options Parameter when set to DENY is not working as described in the Broadcom tech doc at
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/identity-manager/14-5/management-console-help/x-frame-options-parameter.html
Identity Manager v14.4.2 / 14.5 / 14.5.1
This defect is recorded under DE614811 and the Engineering provided a fix (HF-DE614811.zip)
Please open a support case to receive this fix for your environment.