One of my promotion steps is to Update the Build Name. It works great to update the promotion name. On the build Promotion Status page, the updated name is shown in the history section.

But on the job's Promotion Status page, the updated name is not displayed.

Example: The Updated Build name for the promotion is "Tag xyz - #{$BUILD_NUMBER}".
On build promotion status page in history, I see Tag xyz - #6 (date/time) by Tammy Osborn
But on job promotion status page, I only see #6 displayed for the build name