dtfx.js doesn't remove the loading animated gif once the javafx applet loads

Example page:

http://javafx.com/samples/BookPanel/

Open that in safari.
Then run this javascript in the web inspector:

    document.querySelectorAll('img[src$=gif]')[0]

The img is still there even after the javafx loads.

When resizing the window or scrolling, and sometimes while doing nothing, the area where the animated gif would be visible makes the javafx applet flicker.