I'm sorry for posting so much but I've found so many critical errors with my site since the update.
I can no longer edit the courses, units, quizzes or assignments.
The options don't work and I can't click on any of the options.
I don't know how to explain this issue, so I've attached some images to show this.
Thank you.
If you need my login details to see this error, here it is:
http://teachmekorean.co/
Username: Shyaa
Password: Seungie!44
It seems to be working fine on your setup.
Can you please recheck. It might have been cached page when you checked.
Refer screenshot for course:
http://prntscr.com/9wpm4n
for unit :
http://prntscr.com/9wpmgw