I have a strange behaviour in the WebBrowser control. When I download a PDF or an Excel from a site the page turns blank and there's no way to show the content again. I need to restart the browser. When I call PrintAsPDF() the PDF shows the content of the page.
I did the test with the WebBrowser Demo by Bruce as well with the same behaviour.
When I use the original cefclient.exe sample it works fine.