Whistleblower in ESS
The Whistleblower solution allows ESS users to anonymously report misconduct to the organization. When Whistleblower is enabled for a tenant, it requires its own sign-out URL, found under the Settings tab:

The Whistleblower sign-out page should follow the same format as the regular sign-out page, so it's important to have the correct tenant. Assigning the correct page is necessary to ensure the user session remains completely anonymous after the user signs out of Whistleblower.