Error on Raspberry PI with 1280x800 touch display

Run path animation, toggle between car/boat. Noticed something rendered on left of display, outside the centered application "window".

pi@raspberrypi ~/sb/lombard/jars $ ./runjfx -jar PathAnimation.jar
+ exec /opt/java/bin/java -Djavafx.platform=eglfb -Xbootclasspath/a:../working/artifacts/armv6hf-vfp//sdk/rt/lib/ext/jfxrt.jar -jar PathAnimation.jar
2797480384: glGetError 0x505
java.lang.NullPointerException
at com.sun.prism.impl.shape.MaskData.uploadToTexture(MaskData.java:66)
at com.sun.prism.impl.ps.CachingShapeRepState$MaskCache.get(CachingShapeRep.java:315)
at com.sun.prism.impl.ps.CachingShapeRepState.render(CachingShapeRep.java:496)
at com.sun.prism.impl.ps.CachingShapeRep.draw(CachingShapeRep.java:114)
at com.sun.javafx.sg.prism.NGShape.renderContent(NGShape.java:224)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:428)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1277)
at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:242)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:208)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:428)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1277)
at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:242)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:208)
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:1235)
at com.sun.javafx.sg.prism.NGNode.renderOpacity(NGNode.java:693)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:420)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1277)
at com.sun.javafx.sg.prism.NGGroup.renderChildren(NGGroup.java:242)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:208)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:428)
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:69)
at com.sun.javafx.sg.BaseNode.render(BaseNode.java:1277)
at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:116)
at com.sun.javafx.tk.quantum.AbstractPainter.paintImpl(AbstractPainter.java:219)
at com.sun.javafx.tk.quantum.PresentingPainter.run(PresentingPainter.java:93)
at java.util.concurrent.Executors$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:131)
at java.lang.Thread.run(Thread.java:722)
2797667331: glGetError 0x505