How can we report a sharepoint bug to Microsoft?
Not sure how you have identified it as a bug already without reporting it to microsoft PSS. The first thing is to report the issue you are facing and your scenario to Microsoft Premier Support.Do you want the issue to be acknowledged and considered for remediation? If you are a Premier customer then you can open the case with MSFT, contact your MSFT account manager and he can explain you the process of opening a case with MSFT Premier support. You will find some options on this page (on the right side under Key Resources section):http://support.microsoft.com/Default.aspx
i am sure its a bug..i will post a separate thread for it.
Just call Microsoft support.................