1) EnsembleApp
2) Go to 'Media' section
3) Run 'Streaming Media Player'
4) Wait for the move it start (is should be the "Java home boy" video)
5) Press the Window close box for the stage (the stage will close and java will exit)
6) BUG: A runnable is attempted to be executed after Glass has exited

Here is the message you get:

Java has been detached already, but someone is still trying to use it at -[GlassRunnable run]:/Users/steve/Documents/jfx-8u20/jfx/rt/modules/graphics/src/main/native-glass/mac/GlassApplication.m:92
Java has been detached already, but someone is still trying to use it at -[GlassRunnable dealloc]:/Users/steve/Documents/jfx-8u20/jfx/rt/modules/graphics/src/main/native-glass/mac/GlassApplication.m:106
AVF info: hasOfflineRenderer, board-id check : true