Code Snippet Block 'copy button' Not Working?

Hello all, I have inserted some text into a Code Snippet block to help the learner quickly copy and then paste some text as they work along with a course I'm designing. 

Today I noticed that in Review360 it seems the Code Snippet copy button does not allow the user to quickly click and copy the text. However, when the same copy button is clicked in the Edit view of my course, it works flawlessly. 

Have I done something wrong?