State problems with messages on the dashboard.

I own a dashboard that is not a favourite. When I click to display 'System Dashboard' directly I get the following message for the dashboard:

'You are viewing the 'System Default' dashboard, as you have not added any dashboards as favourites. To display your preferred dashboard here, click Manage Dashboard and add one or more dashboards as favourites.'

I would expect the dashboard to display an error message of the form:

The dashboard that you are viewing will only be displayed temporarily, as you do not have it added as a favourite. To display this dashboard permanently, add it as a favourite.

since I have asked to display the page explicitly.