UPDATE: New version available for .NET / WPF 4.0 here!
Here are the known issues/problems:
- Resizing the WebBrowser causes the content to flicker. This appears to be an Awesomium issue, but it needs more investigation (pending support request on Awesomium forum).
- There is an artifact left behind when scrolling a page; this is a known bug in Awesomium and will be fixed by Awesomium RC1.