Exception when a stage is shown in MouseEntered handler

This bug represents problem raised in OTN forum: https://forums.oracle.com/forums/thread.jspa?forumID=1385&threadID=2362326

Run the attached code, following exception appears in console:

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:547)
at java.util.ArrayList.get(ArrayList.java:322)
at javafx.scene.Scene$MouseHandler.handleEnterExit(Scene.java:2585)
at javafx.scene.Scene$MouseHandler.process(Scene.java:2674)
at javafx.scene.Scene$MouseHandler.process(Scene.java:2520)
at javafx.scene.Scene$MouseHandler.access$1200(Scene.java:2493)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1226)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:1810)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:200)
at com.sun.glass.ui.View.handleMouseEvent(View.java:256)
at com.sun.glass.ui.View.notifyMouse(View.java:516)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
at com.sun.glass.ui.win.WinApplication$2$1.run(WinApplication.java:62)
at java.lang.Thread.run(Thread.java:662)