WebView weird rendering issue (Color rectangles) - Debug Mode

Question

Hi,
i got a problem with a JavaFX Webview.
Everything loads fine, but every single Element in the DOM of the page (including the body) is overlayed with a random colored rectangle when hovered.
After a few seconds the entire page is renders unreadable and is only a freaky mix of colors.
It does work without problems in the JavaFX Ensemble Example so i think it can't be a javafx probleme but i am doing something wrong somewhere else in my application.
The initialisation code is the same as in the example:
webview = new WebView();
previewStage.getChildren().add(webview);
final WebEngine webEngine = webview.getEngine();
webEngine.load("http://www.google.de");
Thought it might be an stylesheet issue, but i removed all stylesheets and it still looks the same.
I attached some pictures how it looks.
http://www.tinyuploads.com/images/31lf1b.png
http://www.tinyuploads.com/images/UxK8wZ.png
I appreciate any help.
Thank you!

Answer 1

THANK YOU VERY MUCH.
This solved my problem and it was driving me crazy. :-)
For Future reference:
WebView enters a debug mode when logging is set to a level higher than FINEST.
You can change it for the particular class using these lines:
Logger logger = Logger.getLogger( WCGraphicsPrismContext.class.getName() );
logger.setLevel( Level.OFF );