The WebEngine is unable to render simple HTML checkboxes. See the attached example, which tries to load http://html-codes.1keydata.com/html-checkbox.php

If you view this page in a normal browser, you can see the checkboxes. However, with the example provided, they are not rendered.

Additionally - if you move the mouse over the area, where the checkboxes were supposed to be rendered, the following exception is thrown:

java.lang.NullPointerException
        at javafx.scene.Node.impl_pseudoClassStateChanged(Node.java:4186)
        at javafx.scene.control.ScrollBar.storeVertical(ScrollBar.java:116)
        at javafx.scene.control.ScrollBar.setVertical(ScrollBar.java)
        at com.sun.webpane.sg.theme.ScrollBarThemeImpl.adjustScrollBar(ScrollBarThemeImpl.java:68)
        at com.sun.webpane.sg.theme.ScrollBarThemeImpl.hitTest(ScrollBarThemeImpl.java:127)
        at com.sun.webpane.platform.WebPage.twkProcessMouseEvent(Native Method)
        at com.sun.webpane.platform.WebPage.dispatchMouseEvent(WebPage.java:675)
        at javafx.scene.web.WebView.processMouseEvent(WebView.java:366)
        at javafx.scene.web.WebView.access$100(WebView.java:41)
        at javafx.scene.web.WebView$2.handle(WebView.java:396)
        at javafx.scene.web.WebView$2.handle(WebView.java:394)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:55)
        at com.sun.javafx.event.DefaultEventDispatcher.dispatchBubblingEvent(DefaultEventDispatcher.java:173)
        at com.sun.javafx.event.DefaultEventDispatcher.dispatchBubblingEvent(DefaultEventDispatcher.java:157)
        at com.sun.javafx.event.DefaultEventDispatcher.dispatchEvent(DefaultEventDispatcher.java:120)
        at javafx.scene.Node$7.dispatchEvent(Node.java:3863)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
        at com.sun.javafx.event.EventRedirector.dispatchEvent(EventRedirector.java:79)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:92)
        at javafx.event.Event.fireEventImpl(Event.java:172)
        at javafx.event.Event.fireEvent(Event.java:162)
        at javafx.scene.Node.fireEvent(Node.java:3968)
        at javafx.scene.Scene$MouseHandler.process(Scene.java:1912)
        at javafx.scene.Scene$MouseHandler.process(Scene.java:1753)
        at javafx.scene.Scene$MouseHandler.access$600(Scene.java:1725)
        at javafx.scene.Scene.impl_processMouseEvent(Scene.java:882)
        at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:1380)
        at com.sun.javafx.tk.glass.EmbeddedScene$4.run(EmbeddedScene.java:239)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:14)
        at com.sun.glass.ui.win.WinApplication$1.run(WinApplication.java:33)
        at java.lang.Thread.run(Thread.java:662)