diff --git a/ApplicationLibCode/UserInterface/RiuMultiPlotPage.cpp b/ApplicationLibCode/UserInterface/RiuMultiPlotPage.cpp
index 4d6a1c7..7e371f8 100644
--- a/ApplicationLibCode/UserInterface/RiuMultiPlotPage.cpp
+++ b/ApplicationLibCode/UserInterface/RiuMultiPlotPage.cpp
@@ -387,6 +387,26 @@ void RiuMultiPlotPage::renderTo( QPaintDevice* paintDevice )
 //--------------------------------------------------------------------------------------------------
 void RiuMultiPlotPage::renderTo( QPainter* painter, double scalingFactor )
 {
+    // Temporary diagnostic for missing titles in native snapshot exports.
+    const auto logLabel = [&]( const char* kind, const QLabel* label )
+    {
+        const auto palette = label->palette();
+        qInfo() << "P12_PLOT_LABEL" << "kind" << kind << "text" << label->text()
+                << "pageRect" << QRect( label->mapTo( this, QPoint() ), label->size() )
+                << "hidden" << label->isHidden() << "visible" << label->isVisible()
+                << "visibleToPage" << label->isVisibleTo( this ) << "foregroundRole" << label->foregroundRole()
+                << "paletteGroup" << palette.currentColorGroup()
+                << "foreground" << palette.color( label->foregroundRole() ).name( QColor::HexArgb )
+                << "background" << palette.color( label->backgroundRole() ).name( QColor::HexArgb )
+                << "font" << label->font().toString() << "viewport" << painter->viewport()
+                << "window" << painter->window() << "hasClipping" << painter->hasClipping()
+                << "clip" << painter->clipBoundingRect() << "opacity" << painter->opacity()
+                << "transform" << painter->combinedTransform()
+                << "deviceDpi" << painter->device()->logicalDpiX() << painter->device()->logicalDpiY()
+                << "devicePixelRatio" << painter->device()->devicePixelRatioF();
+    };
+    logLabel( "parent", m_plotTitle );
+
     painter->fillRect( painter->viewport(), Qt::white );
     // A hidden ancestor does not hide titles within the exported page.
     if ( m_plotTitle->isVisibleTo( this ) )
@@ -401,6 +421,7 @@ void RiuMultiPlotPage::renderTo( QPainter* painter, double scalingFactor )
 
     for ( auto subTitle : subTitlesForVisiblePlots() )
     {
+        logLabel( "child", subTitle );
         if ( subTitle->isVisibleTo( this ) )
         {
             QPoint renderOffset = m_plotWidgetFrame->mapToParent( subTitle->frameGeometry().topLeft() ) - marginOffset;
@@ -426,6 +447,10 @@ void RiuMultiPlotPage::renderTo( QPainter* painter, double scalingFactor )
         QPoint plotWidgetFrameTopLeft = m_plotWidgetFrame->frameGeometry().topLeft();
         plotWidgetGeometry.moveTo( plotWidgetTopLeft + plotWidgetFrameTopLeft - marginOffset );
 
+        qInfo() << "P12_PLOT_TARGET" << "title" << plotWidget->plotTitle() << "targetRect" << plotWidgetGeometry
+                << "viewport" << painter->viewport() << "hasClipping" << painter->hasClipping()
+                << "clip" << painter->clipBoundingRect() << "opacity" << painter->opacity()
+                << "transform" << painter->combinedTransform() << "scalingFactor" << scalingFactor;
         plotWidget->renderTo( painter, plotWidgetGeometry, scalingFactor );
     }
 }