diff --git a/src/board/UBBoardView.cpp b/src/board/UBBoardView.cpp
index 9470d2dd..7d1d1033 100644
--- a/src/board/UBBoardView.cpp
+++ b/src/board/UBBoardView.cpp
@@ -52,6 +52,11 @@
 #include "board/UBBoardController.h"
 #include "board/UBBoardPaletteManager.h"
 
+#ifdef Q_WS_MAC
+#include "core/UBApplicationController.h"
+#include "desktop/UBDesktopAnnotationController.h"
+#endif
+
 #include "domain/UBGraphicsTextItem.h"
 #include "domain/UBGraphicsPixmapItem.h"
 #include "domain/UBGraphicsWidgetItem.h"
@@ -379,6 +384,17 @@ void UBBoardView::tabletEvent (QTabletEvent * event)
 
 
     bool acceptEvent = true;
+#ifdef Q_WS_MAC
+    //Work around #1388. After selecting annotation tool in desktop mode, annotation view appears on top when
+    //using Mac OS X. In this case tablet event should send mouse event so as to let user interact with
+    //stylus palette.
+    Q_ASSERT(UBApplication::applicationController->uninotesController());
+    if (UBApplication::applicationController->uninotesController()->drawingView() == this) {
+        if (UBApplication::applicationController->uninotesController()->desktopPalettePath().contains(event->pos())) {
+            acceptEvent = false;
+        }
+    }
+#endif
 
     switch (event->type ()) {
     case QEvent::TabletPress: {
@@ -1161,7 +1177,7 @@ UBBoardView::mouseReleaseEvent (QMouseEvent *event)
           movingItem = NULL;
       }
       else
-      if (movingItem && !isCppTool(movingItem))
+      if (movingItem && (!isCppTool(movingItem) || UBGraphicsCurtainItem::Type == movingItem->type()))
       {
           if (suspendedMousePressEvent)
           {
diff --git a/src/desktop/UBDesktopAnnotationController.cpp b/src/desktop/UBDesktopAnnotationController.cpp
index 39c474ec..0bb9ff00 100644
--- a/src/desktop/UBDesktopAnnotationController.cpp
+++ b/src/desktop/UBDesktopAnnotationController.cpp
@@ -42,6 +42,7 @@
 #include "board/UBBoardPaletteManager.h"
 
 #include "domain/UBGraphicsScene.h"
+#include "domain/UBGraphicsPolygonItem.h"
 
 #include "UBCustomCaptureWindow.h"
 #include "UBWindowCapture.h"
@@ -179,6 +180,25 @@ UBDesktopPalette* UBDesktopAnnotationController::desktopPalette()
     return mDesktopPalette;
 }
 
+QPainterPath UBDesktopAnnotationController::desktopPalettePath() const
+{
+    QPainterPath result;
+    if (mDesktopPalette && mDesktopPalette->isVisible()) {
+        result.addRect(mDesktopPalette->geometry());
+    }
+    if (mDesktopPenPalette && mDesktopPenPalette->isVisible()) {
+        result.addRect(mDesktopPenPalette->geometry());
+    }
+    if (mDesktopMarkerPalette && mDesktopMarkerPalette->isVisible()) {
+        result.addRect(mDesktopMarkerPalette->geometry());
+    }
+    if (mDesktopEraserPalette && mDesktopEraserPalette->isVisible()) {
+        result.addRect(mDesktopEraserPalette->geometry());
+    }
+
+    return result;
+}
+
 /**
  * \brief Toggle the visibility of the pen associated palette
  * @param checked as the visibility state
@@ -821,6 +841,7 @@ void UBDesktopAnnotationController::updateMask(bool bTransparent)
         // Here we have to generate a new mask This method is certainly resource
         // consuming but for the moment this is the only solution that I found.
         mMask = QPixmap(mTransparentDrawingView->width(), mTransparentDrawingView->height());
+        mMask.fill(Qt::transparent);
 
         QPainter p;
 
@@ -836,8 +857,8 @@ void UBDesktopAnnotationController::updateMask(bool bTransparent)
         }
         if(UBApplication::boardController->paletteManager()->mKeyboardPalette->isVisible())
         {
-            p.drawRect(UBApplication::boardController->paletteManager()->mKeyboardPalette->geometry().x(), UBApplication::boardController->paletteManager()->mKeyboardPalette->geometry().y(), 
-                UBApplication::boardController->paletteManager()->mKeyboardPalette->width(), UBApplication::boardController->paletteManager()->mKeyboardPalette->height());
+            p.drawRect(UBApplication::boardController->paletteManager()->mKeyboardPalette->geometry().x(), UBApplication::boardController->paletteManager()->mKeyboardPalette->geometry().y(),
+                       UBApplication::boardController->paletteManager()->mKeyboardPalette->width(), UBApplication::boardController->paletteManager()->mKeyboardPalette->height());
         }
 
         if(UBApplication::boardController->paletteManager()->leftPalette()->isVisible())
@@ -897,7 +918,7 @@ void UBDesktopAnnotationController::updateMask(bool bTransparent)
         {
             QGraphicsItem* pCrntItem = allItems.at(i);
 
-            if(pCrntItem->isVisible())
+            if(pCrntItem->isVisible() && pCrntItem->type() == UBGraphicsPolygonItem::Type)
             {
                 QPainterPath crntPath = pCrntItem->shape();
                 QRectF rect = crntPath.boundingRect();
@@ -908,7 +929,7 @@ void UBDesktopAnnotationController::updateMask(bool bTransparent)
 
         annotationPainter.end();
 
-        mTransparentDrawingView->setMask(mMask.createMaskFromColor(Qt::black));
+        mTransparentDrawingView->setMask(mMask.mask());
     }
     else
     {
diff --git a/src/desktop/UBDesktopAnnotationController.h b/src/desktop/UBDesktopAnnotationController.h
index 0c09c35f..3a92b1dc 100644
--- a/src/desktop/UBDesktopAnnotationController.h
+++ b/src/desktop/UBDesktopAnnotationController.h
@@ -61,6 +61,7 @@ class UBDesktopAnnotationController : public QObject
         void hideWindow();
 
         UBDesktopPalette *desktopPalette();
+        QPainterPath desktopPalettePath() const;
         UBBoardView *drawingView();
 
         void TransparentWidgetResized();