Lessons > Click Embedded Assignment Link > Can't Preview Attached Rubric

In Trunk, set-up a site with Assignments, Rubrics, and Lessons. Create any rubric. Create any assignment (with any future due date and default settings) Attach the rubric to the assignment (with default settings) and click "Post."  Go to Lessons and click "Add Content+." Select "Link to an Assignment." Choose the assignment you created in steps 2-3 and click "Use Selected Item." Now login as a student. Navigate to the Assignments tool and click the Assignment. You'll observe that you can click "Preview Rubric" to observe the rubric. Now navigate to the Lessons tool and click the linked assignment. You'll notice that there is no "Preview Rubric" button.