In the timeline block, some activities have special actions particular to each module. For example, assignments have an "Add submission" button; chats have an "Enter the chat" button; etc.

However, some of these actions are linking to the same page as the activity title. For example, the chat's "Enter the chat" opens the chat and users have to click on the "Enter the chat" button in the page to proceed. Thus making the button in the timeline block misleading.

There are some others that work as expected. Pressing the "Add submission" button from an assignment will take users to a url with action=editsubmission and open the submission form.

I think we should either fix these buttons to do what they say, or remove them if they are redundant.