Plain and simple its awful. Actually, to a large degree unusable by our employees and external customers.
1. forced ascending order. does not work for us at all.
2. hitting return on your keyboard - posts the comments. super annoying.
3. "All" comments view. No idea how anyone thought this would be useful. Its confusing taking comments outside the context of the task (row) they are associated with.
4. Fixed position. It has to be to the right and I cannot move it onto my second screen (on its own). Not a good place for it. In addition, I cannot make it big (as in a lot bigger).
I am really surprised this was done to such a great problem. Judging by the myriads of complaints it really should be removed or at the very least made optional.