diff --git a/source/Components/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs b/source/Components/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
index 0d7cd70a..d281a2ee 100644
--- a/source/Components/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
+++ b/source/Components/Xceed.Wpf.AvalonDock/Controls/LayoutGridControl.cs
@@ -607,6 +607,10 @@ public virtual void AdjustFixedChildrenPanelSizes(Size? parentSize = null)
       {
         child.AdjustFixedChildrenPanelSizes(availableSize);
       }
+
+      // #81 - Make parents update their children up the tree. Otherwise, they will not be redrawn.
+      if (parentSize == null)
+        _model.RaiseChildrenTreeChanged();
     }
 
     private FrameworkElement GetNextVisibleChild( int index )
diff --git a/source/Components/Xceed.Wpf.AvalonDock/Layout/LayoutGroupBase.cs b/source/Components/Xceed.Wpf.AvalonDock/Layout/LayoutGroupBase.cs
index 442a9c22..7f0af4bd 100644
--- a/source/Components/Xceed.Wpf.AvalonDock/Layout/LayoutGroupBase.cs
+++ b/source/Components/Xceed.Wpf.AvalonDock/Layout/LayoutGroupBase.cs
@@ -38,6 +38,14 @@ protected void NotifyChildrenTreeChanged( ChildrenTreeChange change )
         parentGroup.NotifyChildrenTreeChanged( ChildrenTreeChange.TreeChanged );
     }
 
+    internal void RaiseChildrenTreeChanged()
+    {
+      OnChildrenTreeChanged(ChildrenTreeChange.DirectChildrenChanged);
+      var parentGroup = Parent as LayoutGroupBase;
+      if (parentGroup != null)
+        parentGroup.RaiseChildrenTreeChanged();
+    }
+
     protected virtual void OnChildrenTreeChanged( ChildrenTreeChange change )
     {
       if( ChildrenTreeChanged != null )