#3419 added extra parameter to createSingleRoot node method so it will always show a single tree. If a single tree doesn't have children it does not show

src/Umbraco.Web/Models/Trees/SectionRootNode.cs

@@ -28,6 +28,7 @@ namespace Umbraco.Web.Models.Trees
     {
         private static readonly string RootId = Core.Constants.System.Root.ToString(CultureInfo.InvariantCulture);
         private bool _isGroup;
+        private bool _alwaysShow;
 
         /// <summary>
         /// Creates a group node for grouped multiple trees
@@ -87,13 +88,15 @@ namespace Umbraco.Web.Models.Trees
         /// <param name="menuUrl"></param>
         /// <param name="title"></param>
         /// <param name="children"></param>
+        /// <param name="alwaysShowRootNode"></param>
         /// <returns></returns>
-        public static TreeRootNode CreateSingleTreeRoot(string nodeId, string getChildNodesUrl, string menuUrl, string title, TreeNodeCollection children)
+        public static TreeRootNode CreateSingleTreeRoot(string nodeId, string getChildNodesUrl, string menuUrl, string title, TreeNodeCollection children, bool alwaysShowRootNode = false)
         {
             return new TreeRootNode(nodeId, getChildNodesUrl, menuUrl)
             {
                 Children = children,
-                Name = title
+                Name = title,               
+                _alwaysShow = alwaysShowRootNode
             };
         }
 
@@ -150,6 +153,6 @@ namespace Umbraco.Web.Models.Trees
         /// This is used in the UI to configure a full screen section/app
         /// </remarks>
         [DataMember(Name = "containsTrees")]
-        public bool ContainsTrees => Children.Count > 0;
+        public bool ContainsTrees => Children.Count > 0 || _alwaysShow;
     }
 }

src/Umbraco.Web/Trees/ApplicationTreeController.cs

@@ -171,12 +171,17 @@ namespace Umbraco.Web.Trees
                     throw new InvalidOperationException("Could not create root node for tree " + configTree.Alias);
                 }
 
+                var treeAttribute = configTree.GetTreeAttribute();
+
                 var sectionRoot = TreeRootNode.CreateSingleTreeRoot(
                     rootId,
                     rootNode.Result.ChildNodesUrl,
                     rootNode.Result.MenuUrl,
                     rootNode.Result.Name,
-                    byControllerAttempt.Result);
+                    byControllerAttempt.Result,
+                    treeAttribute.AlwaysShowRootItem);
+
+               
 
                 //assign the route path based on the root node, this means it will route there when the section is navigated to
                 //and no dashboards will be available for this section