It is a task - replies to tickets via email are working properly.My understanding is that when you add a collaborator to a task, it should behave much the same way tickets do where the collaborator can update the task by replying to it in email.In addition, the message at the bottom of the task says "You're getting this email because you are a collaborator on task #754362. To participate, simply reply to this email." - which would seem to indicate that type of behavior, but doing so generates a new ticket instead of updating the task.
