If a Parent has an attached css stylesheet, and is removed from the scene graph, resources associated with the stylesheet are not released, creating a memory leak.

This relates to the discussion on the OTN forum: https://forums.oracle.com/forums/thread.jspa?threadID=2485338&tstart=0
I created a simple test case which repeatedly reloads an FXML file, attaches a simple stylesheet, and sets the resulting Parent as the center of a BorderPane. With the maximum memory ~1GB this fails after about 7000 iterations (takes ~10-15 minutes). The original post on OTN, which involved a more complex scene graph and more complex css, claimed failure in ~30-40 reloads.