How does Rendering work in Frame control ?

WPF changes the way it renders the frame control based on the content it contains. It renders using the WPF rendering pipeline when the content is an XAML or loose XAML file whereas it uses Internet Explorer’s GDI based rendering when the content is HTML. Therefore, you will encounter issues when applying transforms to a Frame with HTML content. Issues also occur when ‘ApplyTransparency’ is enabled.