Clicking on Document Management tab displays the key of the default server domains page instead of the page name

Steps to reproduce:

1. Add a second domain to Nuxeo DM.
2. Go on the "Domains on the default server" page.
3. Click on the Home or Admin Center tab.
4. Click on the Document Management tab.
   => Teh key to the page is displayed instead of the page's name: 738714b0-0688-412e-a3b3-f17331c9c495 for instance.
   Clicking on the Nuxeo DM logo works fine: it displays the page name.

It occurs only when there is more than one domain.