diff --git a/sources/QetGraphicsItemModeler/qetgraphicshandleritem.cpp b/sources/QetGraphicsItemModeler/qetgraphicshandleritem.cpp
index e2be2e651..d7b747f23 100644
--- a/sources/QetGraphicsItemModeler/qetgraphicshandleritem.cpp
+++ b/sources/QetGraphicsItemModeler/qetgraphicshandleritem.cpp
@@ -35,7 +35,7 @@ QRectF QetGraphicsHandlerItem::boundingRect() const
 {
     qreal rect_size = m_size * m_previous_zoom_factor;
     QRectF rect(0-rect_size/2, 0-rect_size/2, rect_size, rect_size);
-    rect.adjust(-2, -2, 2, 2);
+    rect.adjust(-0.1, -0.1, 0.1, 0.1);
 	return rect;
 }
 
diff --git a/sources/QetGraphicsItemModeler/qetgraphicshandleritem.h b/sources/QetGraphicsItemModeler/qetgraphicshandleritem.h
index 9cf6646ce..7d562ba6c 100644
--- a/sources/QetGraphicsItemModeler/qetgraphicshandleritem.h
+++ b/sources/QetGraphicsItemModeler/qetgraphicshandleritem.h
@@ -30,7 +30,7 @@
 class QetGraphicsHandlerItem : public QGraphicsItem
 {
     public:
-        QetGraphicsHandlerItem(qreal size = 15);
+        QetGraphicsHandlerItem(qreal size = 10);
         virtual QRectF boundingRect() const;
 		
 		enum { Type = UserType + 1200};
@@ -47,7 +47,7 @@ class QetGraphicsHandlerItem : public QGraphicsItem
 		QColor m_color;
 		
 	public:
-		static QVector<QetGraphicsHandlerItem *> handlerForPoint(const QVector<QPointF> &points, int size = 15);
+		static QVector<QetGraphicsHandlerItem *> handlerForPoint(const QVector<QPointF> &points, int size = 10);
 };
 
 #endif // QETGRAPHICSHANDLERITEM_H
diff --git a/sources/diagram.cpp b/sources/diagram.cpp
index 17a83e934..3e0c5e51d 100644
--- a/sources/diagram.cpp
+++ b/sources/diagram.cpp
@@ -63,6 +63,15 @@ Diagram::Diagram(QETProject *project) :
 	m_freeze_new_elements   (false),
 	m_freeze_new_conductors_ (false)
 {
+	
+	setItemIndexMethod(QGraphicsScene::NoIndex);
+		//Set to no index, because they can be the source of the crash with conductor and shape ghost.
+		//https://forum.qt.io/topic/71316/qgraphicsscenefinditembsptreevisitor-visit-crashes-due-to-an-obsolete-paintevent-after-qgraphicsscene-removeitem
+		//https://stackoverflow.com/questions/38458830/crash-after-qgraphicssceneremoveitem-with-custom-item-class
+		//http://www.qtcentre.org/archive/index.php/t-33730.html
+		//http://tech-artists.org/t/qt-properly-removing-qgraphicitems/3063
+	
+	
 	setProject(project);
 	qgi_manager_ = new QGIManager(this);
 	setBackgroundBrush(Qt::white);
diff --git a/sources/editor/elementscene.cpp b/sources/editor/elementscene.cpp
index b57137142..de4643a59 100644
--- a/sources/editor/elementscene.cpp
+++ b/sources/editor/elementscene.cpp
@@ -48,6 +48,14 @@ ElementScene::ElementScene(QETElementEditor *editor, QObject *parent) :
 	m_qgi_manager(this),
 	m_element_editor(editor)
 {
+	
+	setItemIndexMethod(QGraphicsScene::NoIndex);
+		//Set to no index, because they can be the source of the crash with conductor and shape ghost.
+		//https://forum.qt.io/topic/71316/qgraphicsscenefinditembsptreevisitor-visit-crashes-due-to-an-obsolete-paintevent-after-qgraphicsscene-removeitem
+		//https://stackoverflow.com/questions/38458830/crash-after-qgraphicssceneremoveitem-with-custom-item-class
+		//http://www.qtcentre.org/archive/index.php/t-33730.html
+		//http://tech-artists.org/t/qt-properly-removing-qgraphicitems/3063
+	
 	m_behavior = Normal;
 	setItemIndexMethod(NoIndex);
 	setGrid(1, 1);