Steps:

1. Go to Admin/Dashboards/Predefined dashboards/Default dashboard.

Result: There is blue notification To get preview, choose site context and go to "View" tab or click the "Preview" button. which is unnecessary, as it is not possible to preview the dashboard.

Expected result: https://www.figma.com/file/C84ggnTTrPZa2X0dj23IQ7/Bugs-reported-in-v4.6?type=design&node-id=753-4501&mode=design&t=EWiEigBQ2IMaWQth-0