You might face a problem in your ADF application, when based on a HumanTask component (BPM), using the out of the box Comments & Attachemnts.
Well…suddenly it’s not working anymore…you press the add attachmen/comment button, and nothing happen.
So, obviously you first need to verify that the user has the right permission for that action. Once it is clear, check that the following declaration exists in your .jspx page:
Bug or not…it can sometimes disappear and might driving you crazy.