An exception is thrown in -ea mode when Linkedin page is loaded:

java.lang.AssertionError: Unbalanced saveState/restoreState
        at com.sun.webpane.sg.prism.WCGraphicsPrismContext.dispose(WCGraphicsPrismContext.java:1228)
        at com.sun.webpane.sg.prism.WCPageBackBufferImpl.disposeGraphics(WCPageBackBufferImpl.java:30)
        at com.sun.webpane.platform.WebPage.paint(WebPage.java:612)
        at com.sun.javafx.sg.prism.NGWebView.renderContent(NGWebView.java:68)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:185)
        at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:39)
        at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1128)
        at com.sun.javafx.tk.quantum.PaintRunnable.doPaint(PaintRunnable.java:217)
        at com.sun.javafx.tk.quantum.PaintRunnable.paintImpl(PaintRunnable.java:154)
        at com.sun.javafx.tk.quantum.PaintRunnable.run(PaintRunnable.java:329)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
        at com.sun.prism.render.RenderJob.run(RenderJob.java:29)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at com.sun.javafx.tk.quantum.QuantumRenderer$ObservedRunnable.run(QuantumRenderer.java:67)
        at java.lang.Thread.run(Thread.java:732)

Observed with b44.