FULL PRODUCT VERSION :
java version "1.8.0_51"
Java(TM) SE Runtime Environment (build 1.8.0_51-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.51-b03, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 10.0.10240]

A DESCRIPTION OF THE PROBLEM :
Recently adding a `WebView` pane to my JavaFX Application. When resizing my program I get this error and the program freezes.

    java.lang.NullPointerException
     at com.sun.javafx.webkit.prism.WCPageBackBufferImpl.validate(WCPageBackBufferImpl.java:97)
     at com.sun.webkit.WebPage.paint(WebPage.java:644)
     at com.sun.javafx.sg.prism.NGWebView.renderContent(NGWebView.java:95)
     at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067)
     at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
     at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
     at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
     at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067)
     at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
     at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
     at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
     at com.sun.javafx.sg.prism.NGNode.renderForClip(NGNode.java:2308)
     at com.sun.javafx.sg.prism.NGNode.renderRectClip(NGNode.java:2202)
     at com.sun.javafx.sg.prism.NGNode.renderClip(NGNode.java:2228)
     at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2061)
     at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
     at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
     at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
     at com.sun.javafx.sg.prism.NGNode.renderForClip(NGNode.java:2308)
     at com.sun.javafx.sg.prism.NGNode.renderRectClip(NGNode.java:2202)
     at com.sun.javafx.sg.prism.NGNode.renderClip(NGNode.java:2228)
     at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2061)
     at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
     at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:474)
     at com.sun.javafx.tk.quantum.ViewPainter.paintImpl(ViewPainter.java:327)
     at com.sun.javafx.tk.quantum.PresentingPainter.run(PresentingPainter.java:91)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
     at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
     at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:125)
     at java.lang.Thread.run(Thread.java:745)

The website that the webview goes to is

http://www.abendigo.org/gui/


Can someone tell me what causes this issue?

Edit: Not sure why this is needed, but here is the code as requested:

    public class Controller implements Initializable {
    
     @FXML
     public WebView webView;
    
     @Override
     public void initialize(URL location, ResourceBundle resources) {
     webView.getEngine().load("http://abendigo.org/gui/");
     }
    
    }



Video of bug reproduction:
https://youtu.be/6CLPt45AbW0

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_51"
Java(TM) SE Runtime Environment (build 1.8.0_51-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.51-b03, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Watch video and you will see

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Watch video and you will see
ACTUAL -
Watch video and you will see

ERROR MESSAGES/STACK TRACES THAT OCCUR :
    java.lang.NullPointerException
     at com.sun.javafx.webkit.prism.WCPageBackBufferImpl.validate(WCPageBackBufferImpl.java:97)
     at com.sun.webkit.WebPage.paint(WebPage.java:644)
     at com.sun.javafx.sg.prism.NGWebView.renderContent(NGWebView.java:95)
     at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067)
     at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
     at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
     at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
     at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067)
     at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
     at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
     at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
     at com.sun.javafx.sg.prism.NGNode.renderForClip(NGNode.java:2308)
     at com.sun.javafx.sg.prism.NGNode.renderRectClip(NGNode.java:2202)
     at com.sun.javafx.sg.prism.NGNode.renderClip(NGNode.java:2228)
     at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2061)
     at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
     at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235)
     at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576)
     at com.sun.javafx.sg.prism.NGNode.renderForClip(NGNode.java:2308)
     at com.sun.javafx.sg.prism.NGNode.renderRectClip(NGNode.java:2202)
     at com.sun.javafx.sg.prism.NGNode.renderClip(NGNode.java:2228)
     at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2061)
     at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959)
     at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:474)
     at com.sun.javafx.tk.quantum.ViewPainter.paintImpl(ViewPainter.java:327)
     at com.sun.javafx.tk.quantum.PresentingPainter.run(PresentingPainter.java:91)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
     at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
     at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:125)
     at java.lang.Thread.run(Thread.java:745)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
    public class Controller implements Initializable {
    
     @FXML
     public WebView webView;
    
     @Override
     public void initialize(URL location, ResourceBundle resources) {
     webView.getEngine().load("http://abendigo.org/gui/");
     }
    
    }

---------- END SOURCE ----------

SUPPORT :
YES