When displaying polygons in a googlemap application thrown WebView, polygons disappears after several zoom manipulations.

When you test the web page in a browser(based on webkit or no), there are no problems.

After the polygon dissapear, it's impossible to display another one.

To run the sample you have select an item in the list, then the polygon data is send to the web engine to construct the polygon.

There is another way to load the polygons directly from the web page, within the button, to test without javaFX.