--- /dev/null	2018-07-12 12:09:08.460000000 +0530
+++ new/tests/system/src/test/java/test/javafx/stage/NestedEventLoopPlatformExitTest.java	2018-07-12 13:02:42.920743999 +0530
@@ -0,0 +1,90 @@
+/*
+ * 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.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import javafx.application.Application;
+import javafx.application.Platform;
+import javafx.scene.Group;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+import javafx.stage.WindowEvent;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import test.util.Util;
+
+public class NestedEventLoopPlatformExitTest {
+
+    // Used to launch the application before running any test
+    private static final CountDownLatch launchLatch = new CountDownLatch(1);
+
+    public static class TestApp extends Application {
+
+        @Override public void start(Stage primaryStage) throws Exception {
+            primaryStage.setTitle("Primary stage");
+            Group root = new Group();
+            Scene scene = new Scene(root);
+            primaryStage.setScene(scene);
+            primaryStage.setWidth(100);
+            primaryStage.setHeight(100);
+            primaryStage.addEventHandler(WindowEvent.WINDOW_SHOWN,
+                e -> Platform.runLater(launchLatch::countDown));
+            primaryStage.show();
+        }
+    }
+
+    @BeforeClass
+    public static void initFX() {
+        // Start the Application
+        new Thread(() -> Application.launch(TestApp.class, (String[])null)).start();
+
+        try {
+            if (!launchLatch.await(15, TimeUnit.SECONDS)) {
+                Assert.fail("Timeout waiting for FX runtime to start");
+            }
+        } catch (InterruptedException ex) {
+            Assert.fail("Unexpected exception: " + ex);
+        }
+    }
+
+    // Verify that Platform.exit can be called while the NestedEventLoop is
+    // running
+    @Test(timeout = 20000)
+    public void testPlatformExitWithNestedEventLoop() {
+        Util.runAndWait(
+            () -> {
+                Assert.assertFalse(Platform.isNestedLoopRunning());
+                Platform.enterNestedEventLoop(1024L);
+            },
+            () -> {
+                Assert.assertTrue(Platform.isNestedLoopRunning());
+                Platform.exit();
+            }
+        );
+    }
+}