The student's post and the menu bars may disappear after you send an email to the author on the Email Forum User page within the Discussion Board. After sending the email you are returned to the Thread Detail page with an empty thread box and no top or side menu bars. Only the view of the post is missing, the actual post is still visible by re-entering the Discussion Board.

You must reset your Blackboard instance to continue using Blackboard normally. Close all browser instances of Blackboard to continue. Enter blackboard.louisville.edu in the address bar. Select the Login button. You are still logged into Blackboard, simply navigate to your course to resume your activities.

Also note: Selecting the Collect button in the Discussion Board can produce similar results. Follow the steps above to reset your Blackboard instance. These issues have been reported to Blackboard.