It appears that if an instructor's card number begins with a 0, that instructor cannot be removed from a course.
Created attachment 24902 [details] [review] Bug 11645 - Cannot remove instructors from course whose card number begins with a 0 It appears that if an instructor's card number begins with a 0, that instructor cannot be removed from a course. Test Plan: 1) Create a patron with a card number "012345" 2) Add this patron to a course 3) Click the "remove" link for that instructor 4) Note that nothing happens 5) Apply this patch 6) Reload the page 7) Repeat stepts 2-3 8) Note you can now remove the instructor
*** This bug has been marked as a duplicate of bug 11636 ***