When using Workstation and connecting to an HTTP environment, the activity tab may appear blank. To access the activity tab for objects such as documents, dashboards, reports, users, and projects in Workstation:

Workstation uses a web rendering framework to display the activity tab. Starting in Strategy ONE (December 2024), Workstation applies stricter security rules that can cause this issue to appear in HTTP environments.
Strategy suggests all users use an HTTPS environment.