WPF WebBrowser Control - position:fixed Element jumps while scrolling (Windows 8)

Question

We use the WPF WebBrowser control to display an embedded page. On Windows 8 we observe a strange jumping behavior of elements with css position:fixed while scrolling.

Answer 1

We checked again on a new Machine also running Windows 8 and the error was gone, after some checks we determined that the new Machine had some new Updates for Windows 8 installed. We went to check for Updates on the Surface and after applying all Updates the Error seems to be gone.

Without any recompilation or further settings just by applying the latest Win 8 Updates the error is fixed.

Scrolling is smooth now. Same executable no changes, so i guess it was some bug in the runtime libs after all.