Move this box out of this corner
Can you give us a little more detail here? Which box, which corner of which page?
Not sure if this is the problem, but on Chrome, at least, when adding a new comment (i.e. as I'm doing now) the text-entry box is far too narrow, occupying only about a third of the outer box, and allowing maybe 4 or 5 words per line at most.
Just don't have it