Fix context menu on widgets 'Document id title with link' and 'Title with link' when used in content view in custom tab

When widgets Document id title with link and Title with link are used in a content view rendered in a custom tab, they get the right-click context menu but using the same content view as the Main content view of a folderish document type (i.e. Workspace) in Studio, the same widgets don't get the context menu.
What behaviour is the right one?