Running the WebLauncher toy, the default page popped in, then this exception occurred with no interaction at all with the app (no key presses, no mouse events, etc.)

----- WebLauncher -----
java -cp ../../../artifacts/sdk/rt/lib/jfxrt.jar:dist/WebLauncher.jar WebLauncher
java.lang.IllegalArgumentException: Upload requires 67700 elements, but only 55845 elements remain in the buffer
at com.sun.prism.impl.BaseTexture.checkUpdateParams(BaseTexture.java:171)
at com.sun.prism.es2.ES2Texture.update(ES2Texture.java:528)
at com.sun.prism.impl.BaseTexture.update(BaseTexture.java:109)
at com.sun.prism.impl.BaseResourceFactory.createTexture(BaseResourceFactory.java:121)
at com.sun.prism.impl.BaseResourceFactory.getCachedTexture(BaseResourceFactory.java:100)
at com.sun.prism.impl.BaseResourceFactory.getCachedTexture(BaseResourceFactory.java:91)
at com.sun.prism.impl.ps.BaseShaderContext.validatePaintOp(BaseShaderContext.java:357)
at com.sun.prism.impl.ps.BaseShaderContext.validatePaintOp(BaseShaderContext.java:292)
at com.sun.prism.impl.ps.BaseShaderGraphics.renderGeneralRoundedPgram(BaseShaderGraphics.java:720)
at com.sun.prism.impl.ps.BaseShaderGraphics.renderGeneralRoundedRect(BaseShaderGraphics.java:421)
at com.sun.prism.impl.ps.BaseShaderGraphics.fillRect(BaseShaderGraphics.java:739)
at com.sun.webpane.sg.prism.WCGraphicsPrismContext.drawPattern(WCGraphicsPrismContext.java:586)
at com.sun.webpane.platform.graphics.GraphicsDecoder.drawPattern(GraphicsDecoder.java:402)
at com.sun.webpane.platform.graphics.GraphicsDecoder.decode(GraphicsDecoder.java:190)
at com.sun.webpane.platform.graphics.WCRenderQueue.decode(WCRenderQueue.java:70)
at com.sun.webpane.platform.WebPage.paint2GC(WebPage.java:678)
at com.sun.webpane.platform.WebPage.paint(WebPage.java:658)
at com.sun.javafx.sg.prism.NGWebView.renderContent(NGWebView.java:71)
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:1143)
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:205)
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:420)
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:1143)
at com.sun.javafx.tk.quantum.PaintRunnable.doPaint(PaintRunnable.java:217)
at com.sun.javafx.tk.quantum.PaintRunnable.paintImpl(PaintRunnable.java:151)
at com.sun.javafx.tk.quantum.PaintRunnable.run(PaintRunnable.java:352)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
at com.sun.prism.render.RenderJob.run(RenderJob.java:29)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:101)
at java.lang.Thread.run(Thread.java:680)