Create a forum and topic. Link your topic to a gradebook item.
Make a post to the topic.
The grading behavior seems strange.
First, click on the topic and then "Display Entire Message". Click the "Grade" link for the message. A new browser window opens with the grading widget. If you then enter a grade and submit, the window refreshes with a success message and all of the form fields are empty.
Now try grading from the actual message view. The grading thickbox appears, but it is cut off and has a scrollbar. You are unable to scroll enough to use the buttons. See screenshot.
This occurs in both FF and Safari using Nightly - sakai/trunk on Oracle - Built: 06/21/11 12:00 - Sakai Revision: 93919.