Bug in gtkd?

[Johnson Jones via Digitalmars-d-learn]

Trying a very simple interface. When I add a notebook I get the 
following error

(test.exe:4504): Gtk-ERROR **: failed to add UI: 
C:\Test\Main.Glade:27:43 Invalid property: GtkNotebook.tab_hborder

When removing it from the glade file it then crashes with on the 
homogenous property. Removing that allows it to work but then 
clicking on the border between causes the app to crash.

clicking the link gives

(SongPractice.exe:4796): Gtk-WARNING **: Couldn't 
export handle, unsupported windowing system


Also, there is no icon on the task bar of the app so no way to 
find it if the app is minimized. Not sure why that is, but seems 
like it should be there regardless.

The app is

int main(string[] args)
{
   gtk.Main.init(args);
   auto mw = 
(cast(Window)gtk.builder.getObject("MainWindow"));		mw.showAll();
   gtk.Main.run();	
   return 0;
}

The Main.Glade file is

<?xml version="1.0" encoding="UTF-8"?>
<interface>
   <requires lib="gtk+" version="2.24"/>
   <!-- interface-naming-policy project-wide -->
   <object class="GtkWindow" id="MainWindow">
     <property name="can_focus">False</property>
     <child>
       <object class="GtkVPaned" id="vpaned1">
         <property name="visible">True</property>
         <property name="can_focus">True</property>
         <child>
           <object class="GtkImage" id="image1">
             <property name="visible">True</property>
             <property name="can_focus">False</property>
             <property name="stock">gtk-missing-image</property>
           </object>
           <packing>
             <property name="resize">False</property>
             <property name="shrink">True</property>
           </packing>
         </child>
         <child>
           <object class="GtkNotebook" id="notebook1">
             <property name="visible">True</property>
             <property name="can_focus">True</property>
             <property name="scrollable">True</property>
             <property name="tab_hborder">0</property>
             <property name="homogeneous">True</property>
             <child>
               <object class="GtkVBox" id="vbox1">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
                 <child>
                   <object class="GtkLinkButton" id="linkbutton1">
                     <property name="label" 
translatable="yes">button</property>
                     <property name="visible">True</property>
                     <property name="can_focus">True</property>
                     <property 
name="receives_default">True</property>
                     <property name="has_tooltip">True</property>
                     <property name="relief">none</property>
                     <property 
name="uri">http://glade.gnome.org</property>
                   </object>
                   <packing>
                     <property name="expand">True</property>
                     <property name="fill">True</property>
                     <property name="position">0</property>
                   </packing>
                 </child>
               </object>
             </child>
             <child type="tab">
               <object class="GtkLabel" id="label1">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
                 <property 
name="xalign">0.47999998927116394</property>
                 <property name="ypad">1</property>
                 <property name="label" 
translatable="yes">Settings</property>
               </object>
               <packing>
                 <property name="tab_fill">False</property>
               </packing>
             </child>
           </object>
           <packing>
             <property name="resize">True</property>
             <property name="shrink">True</property>
           </packing>
         </child>
       </object>
     </child>
   </object>
</interface>