--- /dev/null	2018-10-01 13:41:55.688000000 +0530
+++ new/tests/system/src/test/java/javafx/stage/ChildStageLocationTest.java	2018-10-03 15:26:10.844901096 +0530
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2018, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package test.javafx.stage;
+
+import java.util.TimerTask;
+import java.util.Timer;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import javafx.application.Application;
+import javafx.application.Platform;
+import javafx.beans.value.ChangeListener;
+import javafx.beans.value.ObservableValue;
+import javafx.geometry.Rectangle2D;
+import javafx.scene.Scene;
+import javafx.scene.control.Label;
+import javafx.stage.Screen;
+import javafx.stage.Stage;
+
+import javafx.stage.Window;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static junit.framework.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+public class ChildStageLocationTest {
+    static CountDownLatch startupLatch;
+    static Timer timer;
+    static Runnable runNext;
+    static volatile Stage stage;
+    static volatile Stage childStage;
+    static double x, y;
+
+    public static void main(String[] args) {
+        initFX();
+        new ChildStageLocationTest().testLocation();
+    }
+
+    @BeforeClass
+    public static void initFX() {
+        startupLatch = new CountDownLatch(1);
+        new Thread(() -> Application.launch(TestApp.class, (String[])null)).start();
+        try {
+            if (!startupLatch.await(15, TimeUnit.SECONDS)) {
+                fail("Timeout waiting for FX runtime to start");
+            }
+        } catch (InterruptedException ex) {
+            fail("Unexpected exception: " + ex);
+        }
+    }
+
+    @Test
+    public void testLocation() {
+        Rectangle2D bounds = Screen.getPrimary().getVisualBounds();
+        Window window = stage.getScene().getWindow();
+        double minX = bounds.getMinX() + (bounds.getWidth() - window.getWidth())/2 - 50;
+        double minY = bounds.getMinY() + (bounds.getHeight() - window.getHeight())/3 - 100;
+        System.out.println("Primary stage location: " + stage.getX() + " " + stage.getY());
+        assertTrue("Primary stage X location should be >" + minX, stage.getX() > minX);
+        assertTrue("Primary stage Y location should be >" + minY, stage.getY() > minY);
+
+        window = childStage.getScene().getWindow();
+        minX = bounds.getMinX() + (bounds.getWidth() - window.getWidth())/2 - 50;
+        minY = bounds.getMinY() + (bounds.getHeight() - window.getHeight())/3 - 100;
+        System.out.println("Child stage location: " + childStage.getX() + " " + childStage.getY());
+        assertTrue("Child stage X location should be >" + minX, childStage.getX() > minX);
+        assertTrue("Child stage Y location should be >" + minY, childStage.getY() > minY);
+    }
+
+    public static class TestApp extends Application implements ChangeListener {
+
+        @Override
+        public void start(Stage stage) throws Exception {
+            stage.setScene(new Scene(new Label("Label")));
+            stage.xProperty().addListener(this);
+            stage.yProperty().addListener(this);
+            stage.widthProperty().addListener(this);
+            stage.heightProperty().addListener(this);
+            ChildStageLocationTest.stage = stage;
+            runNext = () -> {
+                runNext = () -> {};
+                Platform.runLater(this::createChildStage);
+            };
+            stage.show();
+        }
+
+        @Override
+        public void changed(ObservableValue observable, Object oldValue, Object newValue) {
+            if (timer != null) {
+                timer.cancel();
+            }
+            timer = new Timer();
+            timer.schedule(new TimerTask() {
+                @Override
+                public void run() {
+                    runNext.run();
+                }
+            }, 1500);
+        }
+
+        void createChildStage() {
+            childStage = new Stage();
+            childStage.setScene(new Scene(new Label("Label")));
+            childStage.sizeToScene();
+            childStage.xProperty().addListener(this);
+            childStage.yProperty().addListener(this);
+            childStage.widthProperty().addListener(this);
+            childStage.heightProperty().addListener(this);
+            runNext = startupLatch::countDown;
+            childStage.showAndWait();
+        }
+    }
+
+}
+