We are encountering an issue that we call the “Blank Right Hand Pane.” Alex on our team has created the attached Visual Studio Project and Problem description. The issue appears to be related to when “Optimize for best appearance” is selected.

This issue is impacting a large number of our customers.

We have attachments with details of the problem and description that have been emailed as can not attach here
Word Adin project shows an example when WebBrowser control ActiveX is failing if “Optimize for best appearance” Is selected for user Interface.
Result with “Optimize for compatibility”