Lesson Complete report table headings incorrect display.

This requires a course with 1 teacher and 1 student: As a teacher: 1. Create a lesson that allows multiple attempts 2. Add a True / False question page, where the correct answer advances to the next page 3. Add another True / False question page, where the correct answer advances to the next page 4. Add another True / False question page, where the correct answer advances to the next page 5. Add a content page that advances to the end of lesson. 6. Log out As a student 7. log in and attempt the lesson. Answer some of the questions correctly, and complete the lesson. 8. Re-attempt the lesson and answer all of the questions correctly. 9. Log out As a teacher: 10. Log into the course and click on the participants link in the Navigation block 11. Click on the student who you used to attempt the lesson activity 12. Click on the Complete Report under Administration-> Profile settings for "student" -> Activity Reports -> Complete Report 13. Verify that that both lesson attempts are displayed and the strings are not displaying placeholders.