--- old/modules/javafx.web/src/main/native/Source/WebCore/page/DragController.cpp	2017-10-17 14:02:05.491889425 +0530
+++ new/modules/javafx.web/src/main/native/Source/WebCore/page/DragController.cpp	2017-10-17 14:02:04.619453424 +0530
@@ -870,6 +870,9 @@
         // We shouldn't be starting a drag for an image that can't provide an extension.
         // This is an early detection for problems encountered later upon drop.
         ASSERT(!image->filenameExtension().isEmpty());
+#if PLATFORM(JAVA)
+        m_client.updateFileExtension(imageURL);
+#endif
         if (!dataTransfer.pasteboard().hasData()) {
             m_draggingImageURL = imageURL;
             if (element.isContentRichlyEditable())