Fullscreen stage didn't retain the focus after switching focus to another window and then closing that window

Steps to reproduce:
    1. Make Java console visible by opening Java Control Panel > Java Console > Show console
    2. Run application using javaws: http://sqeweb.us.oracle.com/deployment1/deployment_6_UR_int_exec_ws/6/deployment/src/javafx/fxfeaturesTest/fxfeaturesTest/html/FullscreenTest.jnlp
    3 There are going to be 2 stages with title primary and seconday stage respectively
    4. Click 'Toggle Fullscreen' on the primary stage
    5. Make sure that application is getting full screened i.e covering the entire screen
    6. Use ALT+TAB to switch focus to Secondary stage window. make sure that secondary stage window is having the focus . Close Secondary stage and make sure that Full screen window is there and retaining the Focus. Make sure that Java console is up and running
     Actual result: Full screen window didn't retain the focus.