When using swing and JavaFX (i.e. using a JFXPanel to host the JavaFX GUI) on a latest generation MacBook pro Retina (late 2013 with integrated Intel Iris Pro graphics) with Java 8u5 and Java 8u20, when updating a scene on the JFXPanel, the scene seems to be duplicated multiple times. This is doesn't happen the first time the scene is set in the JFXPanel.
The same code works perfectly well on non Retina displays.