Since the standard font size and website layout makes it hard to read, I usually us the "Zoom" function of Palemoon to enlarge the content of the browser content window, for almost every website.

The above screenshot is sized down to 800x450.
My issue: Why is - unless I create a new subject - the edit area so small?
As you can see from the screenshot, below the edit area and to the left of the smilies there is enough room for the same sized edit area that you get when creating a new subject.
As comparison, here is the screenshot of the editing of this very post:

You can clearly see the difference in the size of the edit area.
The way I zoomed in I get 15 lines of editable area when creating a new thread but only 6 when replying. 15 is great, but 6 is

Is it possible to get the below edit area for reply posts, which usually are the majority of posts anyway. That would be greatly appreciated.
