diff --git a/src/quick/items/qquicktextnodeengine_p.h b/src/quick/items/qquicktextnodeengine_p.h
index 165abe4..d829fea 100644
--- a/src/quick/items/qquicktextnodeengine_p.h
+++ b/src/quick/items/qquicktextnodeengine_p.h
@@ -112,7 +112,8 @@ public:
         static void inOrder(const QVarLengthArray<BinaryTreeNode, 16> &binaryTree, QVarLengthArray<int> *sortedIndexes, int currentIndex = 0);
     };
 
-    QQuickTextNodeEngine() : m_hasSelection(false), m_hasContents(false) {}
+    QQuickTextNodeEngine() : m_hasSelection(false), m_hasContents(false) { qDebug(__FUNCTION__); }
+    ~QQuickTextNodeEngine() { qDebug(__FUNCTION__); }
 
     bool hasContents() const { return m_hasContents; }
     void addTextBlock(QTextDocument *, const QTextBlock &, const QPointF &position, const QColor &textColor, const QColor& anchorColor, int selectionStart, int selectionEnd);
diff --git a/src/quick/scenegraph/qsgcontext.cpp b/src/quick/scenegraph/qsgcontext.cpp
index 202ae91..3da92a4 100644
--- a/src/quick/scenegraph/qsgcontext.cpp
+++ b/src/quick/scenegraph/qsgcontext.cpp
@@ -494,8 +494,11 @@ void QSGRenderContext::invalidate()
     // code is only called from QQuickWindow's shutdown which is called
     // only when the GUI is blocked, and multiple threads will call it in
     // sequence. (see qsgdefaultglyphnode_p.cpp's init())
-    for (QSet<QFontEngine *>::const_iterator it = m_fontEnginesToClean.constBegin(),
+    qDebug() << __FUNCTION__ <<  QThread::currentThreadId() << m_fontEnginesToClean;
+    for (QSet<QFontEngine *>::const_iterator it = m_fontEnginesToClean.constBegin(),         
          end = m_fontEnginesToClean.constEnd(); it != end; ++it) {
+        qDebug() << __FUNCTION__ << "clearGlyphCache";
+        qDebug() <<  (*it)->fontDef.family;
         (*it)->clearGlyphCache(m_gl);
     }
     m_fontEnginesToClean.clear();