Fixed a bug that multiple comment boxes displayed when back button is pressed
Fixed a bug that multiple comment boxes displayed when back button is pressed

Coursemology/coursemology2,cysjonathan/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,cysjonathan/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,cysjonathan/coursemology2