Have a dashboard with several panels with Public permissions and just one for All Users.
EXPECTED
Anonymous users can see the dashboard and all the panels except the one that has no Public permissions.
ACTUALLY
The policy of the panel for All Users drags the rest of the Public dashboard, and no content is visible at all for anonymous users.
The same happens in any other combination of less/more restrictive policies. It would be better if the content with more restrictive policies wouldn't be rendered, still showing all the content compliant with the policy.