Grading Pane confusing for student content

If the instructor adds the student content tool with comments and creates a gradebook item for these items, the 'Show Grading Pane' link displays on the student content. After creating another section for student content that does not have comments added to it, I realized the grading pane was only there for the comments, not for the student content.

This is very confusing if students have added content, but made no comments on any content and the instructor clicks on 'Show Grading Pane', expecting to be able to grade student content and the message displays "There is nothing to grade here."