Don't display navigation component in not-really-primary tabs

views/viewlib.py

@@ -204,6 +204,9 @@ class PrimaryTabWithoutBoxes(tabs.PrimaryTab):
     def is_primary(self):
         return False
 
+    def content_navigation_components(self, context):
+        pass
+
 
 class SubObjectsTab(tabs.TabsMixin, EntityView):
     """Base class for tabs with a 'add' button and one or more list of subobjects, driven by the