1) Run DiamondBenchmarkBug
2) Most of the time (but not always) you will get the following exception:


java.lang.IllegalStateException: Trying to remove a cached item that's not in the cache
at com.sun.prism.impl.ps.CachingShapeRepState$MaskCache.removeEntry(CachingShapeRep.java:240)
at com.sun.prism.impl.ps.CachingShapeRepState$MaskCache.unref(CachingShapeRep.java:352)
at com.sun.prism.impl.ps.CachingShapeRepState.invalidateMaskTexData(CachingShapeRep.java:424)
at com.sun.prism.impl.ps.CachingShapeRepState.render(CachingShapeRep.java:436)
at com.sun.prism.impl.ps.CachingShapeRep.draw(CachingShapeRep.java:114)
at com.sun.javafx.sg.prism.NGShape.renderContent(NGShape.java:224)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1)
at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1277)
at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1252)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1)
at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1277)
at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:237)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:203)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:412)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:1)
at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1277)
at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:99)
at com.sun.javafx.tk.quantum.AbstractPainter.paintImpl(AbstractPainter.java:212)
at com.sun.javafx.tk.quantum.PresentingPainter.run(PresentingPainter.java:103)
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:56)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:129)
at java.lang.Thread.run(Thread.java:722)
ES2 Vram Pool: 2,105,829 used (0.8%), 2,105,829 managed (0.8%), 268,435,456 total
167 total resources being managed
1 permanent resources (0.6%)
1 resources locked (0.6%)
165 resources contain interesting data (98.8%)
0 resources disappeared (0.0%)

NOTE: This happens on Windows and Mac.