Fixes the new Id/Guid property on members, ensures all tabs are expanded by default and removes that init logic from JS since we don't want it there.

src/Umbraco.Web/Models/ContentEditing/Tab.cs

@@ -21,6 +21,12 @@ namespace Umbraco.Web.Models.ContentEditing
         [DataMember(Name = "alias")]
         public string Alias { get; set; }
 
+        /// <summary>
+        /// The expanded state of the tab
+        /// </summary>
+        [DataMember(Name = "open")]
+        public bool Expanded { get; set; } = true;
+
         [DataMember(Name = "properties")]
         public IEnumerable<T> Properties { get; set; }
     }

src/Umbraco.Web/Models/Mapping/MemberTabsAndPropertiesResolver.cs

@@ -119,7 +119,7 @@ namespace Umbraco.Web.Models.Mapping
             {
                 new ContentPropertyDisplay
                 {
-                    Alias = string.Format("{0}id", Constants.PropertyEditors.InternalGenericPropertiesPrefix),
+                    Alias = $"{Constants.PropertyEditors.InternalGenericPropertiesPrefix}id",
                     Label = _localizedTextService.Localize("general/id"),
                     Value = new List<string> {member.Id.ToString(), member.Key.ToString()},
                     View = "idwithguid"