--- a/src/macosx/native/sun/awt/LWCToolkit.m	Thu Sep 17 22:59:48 2015 +0100
+++ b/src/macosx/native/sun/awt/LWCToolkit.m	Fri Oct 02 15:10:07 2015 +0400
@@ -287,7 +287,7 @@
             // Processing all events excluding NSApplicationDefined which need to be processed 
             // on the main loop only (those events are intended for disposing resources)
             NSEvent *event;
-            if ((event = [NSApp nextEventMatchingMask:(NSAnyEventMask & ~NSApplicationDefined)
+            if ((event = [NSApp nextEventMatchingMask:(NSAnyEventMask & ~NSApplicationDefinedMask)
                                            untilDate:nil
                                               inMode:NSDefaultRunLoopMode
                                              dequeue:YES]) != nil) {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/awt/dnd/MissingEventsOnModalDialog/MissingEventsOnModalDialogTest.java	Fri Oct 02 15:10:07 2015 +0400
@@ -0,0 +1,237 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.Dialog;
+import java.awt.Frame;
+import java.awt.Point;
+import java.awt.Robot;
+import java.awt.Window;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.Transferable;
+import java.awt.dnd.DnDConstants;
+import java.awt.dnd.DragGestureEvent;
+import java.awt.dnd.DragGestureListener;
+import java.awt.dnd.DragSource;
+import java.awt.dnd.DropTarget;
+import java.awt.dnd.DropTargetDragEvent;
+import java.awt.dnd.DropTargetDropEvent;
+import java.awt.dnd.DropTargetEvent;
+import java.awt.dnd.DropTargetListener;
+import java.awt.event.InputEvent;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+/*
+ * @test
+ * @bug 8134917
+ * @summary [macosx] JOptionPane doesn't receive mouse events when opened from a drop event
+ * @author Alexandr Scherbatiy
+ */
+public class MissingEventsOnModalDialogTest {
+
+    private static volatile boolean passed = false;
+
+    public static void main(String[] args) throws Exception {
+        Frame sourceFrame = createFrame("Source Frame", 0, 0);
+        Frame targetFrame = createFrame("Target Frame", 250, 250);
+
+        DragSource defaultDragSource
+                = DragSource.getDefaultDragSource();
+        defaultDragSource.createDefaultDragGestureRecognizer(sourceFrame,
+                DnDConstants.ACTION_COPY_OR_MOVE,
+                new TestDragGestureListener());
+        new DropTarget(targetFrame, DnDConstants.ACTION_COPY_OR_MOVE,
+                new TestDropTargetListener(targetFrame));
+
+        Robot robot = new Robot();
+        robot.setAutoDelay(50);
+
+        sourceFrame.toFront();
+        robot.waitForIdle();
+
+        Point point = getCenterPoint(sourceFrame);
+        robot.mouseMove(point.x, point.y);
+        robot.waitForIdle();
+
+        mouseDragAndDrop(robot, point, getCenterPoint(targetFrame));
+
+        long time = System.currentTimeMillis() + 200;
+
+        while (!passed) {
+            if (time < System.currentTimeMillis()) {
+                sourceFrame.dispose();
+                targetFrame.dispose();
+                throw new RuntimeException("Mouse clicked event is lost!");
+            }
+            Thread.sleep(10);
+        }
+        sourceFrame.dispose();
+        targetFrame.dispose();
+    }
+
+    private static Frame createFrame(String title, int x, int y) {
+        Frame frame = new Frame();
+        frame.setSize(200, 200);
+        frame.setLocation(x, y);
+        frame.setTitle(title);
+        frame.setVisible(true);
+        return frame;
+    }
+
+    private static Point getCenterPoint(Window window) {
+        Point centerPoint = window.getLocationOnScreen();
+        centerPoint.translate(window.getWidth() / 2, window.getHeight() / 2);
+        return centerPoint;
+    }
+
+    public static void mouseDragAndDrop(Robot robot, Point from, Point to) {
+        mouseDND(robot, from.x, from.y, to.x, to.y);
+    }
+
+    public static void mouseDND(Robot robot, int x1, int y1, int x2, int y2) {
+
+        int N = 20;
+        int x = x1;
+        int y = y1;
+        int dx = (x2 - x1) / N;
+        int dy = (y2 - y1) / N;
+
+        robot.mousePress(InputEvent.BUTTON1_MASK);
+
+        for (int i = 0; i < N; i++) {
+            robot.mouseMove(x += dx, y += dy);
+        }
+
+        robot.mouseRelease(InputEvent.BUTTON1_MASK);
+    }
+
+    private static class TestDragGestureListener implements DragGestureListener {
+
+        public void dragGestureRecognized(DragGestureEvent dge) {
+            dge.startDrag(null, new StringTransferable());
+        }
+    }
+
+    static class StringTransferable implements Transferable {
+
+        @Override
+        public DataFlavor[] getTransferDataFlavors() {
+            return new DataFlavor[]{DataFlavor.stringFlavor};
+        }
+
+        @Override
+        public boolean isDataFlavorSupported(DataFlavor flavor) {
+            return flavor.equals(DataFlavor.stringFlavor);
+        }
+
+        @Override
+        public Object getTransferData(DataFlavor flavor) {
+            return "Hello World!";
+        }
+    }
+
+    private static class TestDropTargetListener implements DropTargetListener {
+
+        private final Frame targetFrame;
+
+        public TestDropTargetListener(Frame targetFrame) {
+            this.targetFrame = targetFrame;
+        }
+
+        @Override
+        public void dragEnter(DropTargetDragEvent dtde) {
+            dtde.acceptDrag(dtde.getDropAction());
+        }
+
+        @Override
+        public void dragOver(DropTargetDragEvent dtde) {
+            dtde.acceptDrag(dtde.getDropAction());
+        }
+
+        @Override
+        public void dropActionChanged(DropTargetDragEvent dtde) {
+            dtde.acceptDrag(dtde.getDropAction());
+        }
+
+        @Override
+        public void dragExit(DropTargetEvent dte) {
+        }
+
+        @Override
+        public void drop(DropTargetDropEvent dtde) {
+            dtde.acceptDrop(dtde.getDropAction());
+            showModalDialog(targetFrame);
+            dtde.dropComplete(true);
+        }
+    }
+
+    private static void showModalDialog(Frame targetFrame) {
+
+        Dialog dialog = new Dialog(targetFrame, true);
+
+        dialog.addMouseListener(new MouseAdapter() {
+
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                passed = true;
+                dialog.dispose();
+            }
+        });
+
+        dialog.setSize(400, 300);
+        dialog.setTitle("Modal Dialog!");
+
+        clickOnModalDialog(dialog);
+        dialog.setVisible(true);
+    }
+
+    private static void clickOnModalDialog(Dialog dialog) {
+        new Thread(() -> {
+            clickOnDialog(dialog);
+        }).start();
+    }
+
+    private static void clickOnDialog(Dialog dialog) {
+        try {
+            long time = System.currentTimeMillis() + 200;
+
+            while (!dialog.isVisible()) {
+                if (time < System.currentTimeMillis()) {
+                    throw new RuntimeException("Dialog is not visible!");
+                }
+                Thread.sleep(10);
+            }
+
+            Point point = getCenterPoint(dialog);
+            Robot robot = new Robot();
+            robot.setAutoDelay(50);
+
+            robot.mouseMove(point.x, point.y);
+            robot.mousePress(InputEvent.BUTTON1_MASK);
+            robot.mouseRelease(InputEvent.BUTTON1_MASK);
+
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+}