Index: src/gui/qgsmapcanvas.cpp
===================================================================
--- src/gui/qgsmapcanvas.cpp	(revision 15729)
+++ src/gui/qgsmapcanvas.cpp	(working copy)
@@ -232,7 +232,7 @@
   }
 
   // create layer set
-  QStringList layerSet, layerSetOverview;
+  QStringList layerSet, layerSetOverview, allLayerSet;
 
   int i;
   for ( i = 0; i < layers.size(); i++ )
@@ -243,6 +243,9 @@
       continue;
     }
 
+    // collect all layers (both visible and not visible)
+    allLayerSet.push_back( lyr.layer()->id() );
+    
     if ( lyr.isVisible() )
     {
       layerSet.push_back( lyr.layer()->id() );
@@ -275,6 +278,7 @@
     }
 
     mMapRenderer->setLayerSet( layerSet );
+    mMapRenderer->setAllLayerSet( allLayerSet );
 
     for ( i = 0; i < layerCount(); i++ )
     {
Index: src/core/qgsmaprenderer.h
===================================================================
--- src/core/qgsmaprenderer.h	(revision 15729)
+++ src/core/qgsmaprenderer.h	(working copy)
@@ -207,6 +207,9 @@
     //! change current layer set
     void setLayerSet( const QStringList& layers );
 
+    //! change current all layer set
+    void setAllLayerSet( const QStringList& layers );
+
     //! updates extent of the layer set
     void updateFullExtent();
 
@@ -303,6 +306,10 @@
     //! stores array of layers to be rendered (identified by string)
     QStringList mLayerSet;
 
+    //! stores array of all canvas layers (identified by string).
+    //! Need this to calculate full extent correctly
+    QStringList mAllLayerSet;
+
     //! full extent of the layer set
     QgsRectangle mFullExtent;
 
Index: src/core/qgsmaprenderer.cpp
===================================================================
--- src/core/qgsmaprenderer.cpp	(revision 15729)
+++ src/core/qgsmaprenderer.cpp	(working copy)
@@ -840,8 +840,8 @@
 
   // iterate through the map layers and test each layers extent
   // against the current min and max values
-  QStringList::iterator it = mLayerSet.begin();
-  while ( it != mLayerSet.end() )
+  QStringList::iterator it = mAllLayerSet.begin();
+  while ( it != mAllLayerSet.end() )
   {
     QgsMapLayer * lyr = registry->mapLayer( *it );
     if ( lyr == NULL )
@@ -903,6 +903,12 @@
   updateFullExtent();
 }
 
+void QgsMapRenderer::setAllLayerSet( const QStringList& layers )
+{
+  mAllLayerSet = layers;
+  updateFullExtent();
+}
+
 QStringList& QgsMapRenderer::layerSet()
 {
   return mLayerSet;