[a11y] "See scoring details" button lacks focus indicator during keyboard navigation

InstContentTeam

This behavior has been resolved and deployed to the production environment as of 3/11/26.

Summary:

When navigating the Grades page using keyboard navigation as a student, the "See scoring details" button in the assignment row does not display a visual focus indicator when focused via keyboard (Tab key).

Expected Behavior:

When a student navigates to the "See scoring details" button using keyboard controls, the button should display a visible focus indicator to clearly show that it has keyboard focus.

Steps to Reproduce:

Prerequisites: Have a course with at least 5 student enrollments and an assignment which has at least 5 submissions. ( This is because of the See scoring details button requirements: How do I view my grades in a current course?)

1. Masquerade as a student and navigate to the Grades page in the example course
2. Use the Tab key to navigate through interactive elements on the page
3. Observe that when the "See scoring details" button receives focus, no visual indicator appears*
   1. Pressing enter will open the scoring details nonetheless.*
      1. Compare with other focusable elements (e.g., "Apply" button, "Close" link) which do show focus indicators