Created Unassigned: The WPF implementation should use template [9082]

The WPF implementation of HtmlPanel uses hard-coded scrollbars and is difficult to adapt it to a custom style.
It should have a default Style with a ControlTemplate containing a ScrollViewer and a ContentPresenter into which the HTML page should be rendered at the correct offset.

One of the main reasons not to use the WinForms WebBrowser in WPF is because you can't customize the control, especially the scrollbars, so I suppose it would be a great feature if this control was implemented using WPF guidelines that allow custom styling.