--- old/modules/javafx.graphics/src/main/java/com/sun/javafx/tk/quantum/QuantumToolkit.java	2018-07-12 13:02:41.793308000 +0530
+++ new/modules/javafx.graphics/src/main/java/com/sun/javafx/tk/quantum/QuantumToolkit.java	2018-07-12 13:02:41.521443999 +0530
@@ -611,6 +611,13 @@
         eventLoop.leave(rval);
     }
 
+    @Override public void exitAllNestedEventLoops() {
+        checkFxUserThread();
+        for (EventLoop eventLoop : eventLoopMap.values()) {
+            eventLoop.leave(null);
+        }
+    }
+
     @Override public TKStage createTKPopupStage(Window peerWindow,
                                                 StageStyle popupStyle,
                                                 TKStage owner,