diff --git a/include/osgUI/Style b/include/osgUI/Style
index 7cab2dabe..bd7b17675 100644
--- a/include/osgUI/Style
+++ b/include/osgUI/Style
@@ -51,7 +51,7 @@ public:
     virtual osg::Node* createFrame(const osg::BoundingBox& extents, const FrameSettings* frameSettings, const osg::Vec4& colour);
     virtual osg::Node* createText(const osg::BoundingBox& extents, const AlignmentSettings* as, const TextSettings* textSettings, const std::string& text);
     virtual osg::Node* createIcon(const osg::BoundingBox& extents, const std::string& filename, const osg::Vec4& colour);
-    virtual void setupDialogStateSet(osg::StateSet* stateset);
+    virtual void setupDialogStateSet(osg::StateSet* stateset, int binNum);
     virtual void setupClipStateSet(const osg::BoundingBox& extents, osg::StateSet* stateset);
 
 protected:
diff --git a/src/osgUI/ComboBox.cpp b/src/osgUI/ComboBox.cpp
index 814e1cab1..29272e0d0 100644
--- a/src/osgUI/ComboBox.cpp
+++ b/src/osgUI/ComboBox.cpp
@@ -242,9 +242,11 @@ void ComboBox::createGraphicsImplementation()
         // float itemWidth = (_extents.xMax()-_extents.xMin()) - 2.0f*frameWidth;
         float itemHeight = (_extents.yMax()-_extents.yMin()) - 2.0f*frameWidth;
         float popupHeight = (itemHeight)* _items.size() + margin*static_cast<float>(_items.size()-1) + 2.0f*frameWidth;
-        float popupTop = _extents.yMin()-frameWidth-50.0f;
+        float popupTop = _extents.yMin()-frameWidth-margin*1.0f;
+        float popupLeft = _extents.xMin();
+        float popupRight = _extents.xMax();
 
-        osg::BoundingBox popupExtents(_extents.xMin(), popupTop-popupHeight, _extents.zMin(), _extents.xMax(), popupTop, _extents.zMax());
+        osg::BoundingBox popupExtents(popupLeft, popupTop-popupHeight, _extents.zMin(), popupRight, popupTop, _extents.zMax());
         _popup->setExtents(popupExtents);
 
         osg::BoundingBox popupItemExtents(popupExtents.xMin()+frameWidth, popupTop-frameWidth-itemHeight, popupExtents.zMin(), popupExtents.xMax()-frameWidth, popupTop-frameWidth, popupExtents.zMax());
diff --git a/src/osgUI/Dialog.cpp b/src/osgUI/Dialog.cpp
index 7b6f53f96..890bea42f 100644
--- a/src/osgUI/Dialog.cpp
+++ b/src/osgUI/Dialog.cpp
@@ -79,7 +79,7 @@ void Dialog::createGraphicsImplementation()
     _titleDrawable->setDataVariance(osg::Object::DYNAMIC);
     _group->addChild(_titleDrawable.get());
 
-    style->setupDialogStateSet(getOrCreateStateSet());
+    style->setupDialogStateSet(getOrCreateStateSet(), 5);
     style->setupClipStateSet(dialogWithTileExtents, getOrCreateStateSet());
 
     // render before the subgraph
diff --git a/src/osgUI/Popup.cpp b/src/osgUI/Popup.cpp
index 0037fae46..1ac139d1d 100644
--- a/src/osgUI/Popup.cpp
+++ b/src/osgUI/Popup.cpp
@@ -77,7 +77,7 @@ void Popup::createGraphicsImplementation()
     bool requiresFrame = (getFrameSettings() && getFrameSettings()->getShape()!=osgUI::FrameSettings::NO_FRAME);
     if (requiresFrame) { _transform->addChild(style->createFrame(_extents, getFrameSettings(), dialogBackgroundColor)); }
 
-    style->setupDialogStateSet(getOrCreateStateSet());
+    style->setupDialogStateSet(getOrCreateStateSet(), 6);
     style->setupClipStateSet(_extents, getOrCreateStateSet());
 
 
diff --git a/src/osgUI/Style.cpp b/src/osgUI/Style.cpp
index 03c9a3c1a..46518d2b4 100644
--- a/src/osgUI/Style.cpp
+++ b/src/osgUI/Style.cpp
@@ -411,11 +411,12 @@ osg::Node* Style::createIcon(const osg::BoundingBox& extents, const std::string&
     }
 }
 
-void Style::setupDialogStateSet(osg::StateSet* stateset)
+void Style::setupDialogStateSet(osg::StateSet* stateset, int binNum)
 {
-    stateset->setRenderBinDetails(5, "TraversalOrderBin", osg::StateSet::OVERRIDE_RENDERBIN_DETAILS);
+    stateset->setRenderBinDetails(binNum, "TraversalOrderBin", osg::StateSet::OVERRIDE_PROTECTED_RENDERBIN_DETAILS);
     stateset->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
     stateset->setAttributeAndModes( _disabledDepthWrite.get(), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
+    stateset->setNestRenderBins(false);
 }
 
 void Style::setupClipStateSet(const osg::BoundingBox& extents, osg::StateSet* stateset)