Client is missing the interface name that appeared in old versions of Performance Center.
In the 3.6 Release the interface and interface name is present:
In the new Release 21.2.10, the interface name does not show:
Release : 21.x
This was altered some time ago, as the UI designer felt that subtitle showing the interface, or context value, in the subtitle is redundant and not needed when on the context page.
When configured on a dashboard page it will still show the interface name on the context page:
Create a Dashboard with the information required and it will have the name you are missing.