could not find a parent that handles internal children

Using GtkMessageDialog created in glade-3 causes to receive following error whenever MessageDialog is displayed:
 libglade-WARNING **: could not find a parent that handles internal children for `vbox'

This bug seems to be similar to reported here http://lists.ximian.com/pipermail/glade-devel/2003-October/000337.html

below is xml code generated with glade-3

  <widget class="GtkMessageDialog" id="errorsdialog1">
    <property name="visible">True</property>
    <property name="border_width">5</property>
    <property name="title" translatable="yes">Błąd</property>
    <property name="resizable">False</property>
    <property name="modal">True</property>
    <property name="window_position">GTK_WIN_POS_CENTER_ON_PARENT</property>
    <property name="destroy_with_parent">True</property>
    <property name="type_hint">GDK_WINDOW_TYPE_HINT_DIALOG</property>
    <property name="skip_taskbar_hint">True</property>
    <property name="has_separator">False</property>
    <property name="message_type">GTK_MESSAGE_ERROR</property>
    <property name="buttons">GTK_BUTTONS_OK</property>
    <property name="text">Błąd</property>
    <child internal-child="vbox">
      <widget class="GtkVBox" id="dialog-vbox11">
        <property name="visible">True</property>
        <property name="spacing">2</property>
        <child>
          <placeholder/>
        </child>
        <child internal-child="action_area">
          <widget class="GtkHButtonBox" id="dialog-action_area11">
            <property name="visible">True</property>
            <property name="layout_style">GTK_BUTTONBOX_END</property>
          </widget>
          <packing>
            <property name="expand">False</property>
            <property name="pack_type">GTK_PACK_END</property>
          </packing>
        </child>
      </widget>
    </child>
  </widget>