This is separate issue but relates to RT-18341 (see: https://forums.oracle.com/forums/thread.jspa?threadID=2316925&tstart=15)

Please see attached code for an example

When a full screen stage is opened an overlay screen appears saying "Press ESC to exit full-screen mode." and covers the valuable content beneath. If you then move to a new scene (again in full screen mode) the message will appear again (and most likely for every other full screen scene in the application). This would make it very difficult for a user to actually use the application without waiting multiple seconds for the message to disappear at each screen in the application.The message will appear whether you have switched scenes before or after the original message has faded. Also, on the second full screen scene the ESC key does not function anyway so you could not escape full screen even if you wanted to.