Any normal browser
The comments are indented. After a lengthy discussion, they get shoved so far to the right that they become hard to read. The text part gets too narrow. It helps a little to maximize the window, but only up to a point. (And not everyone has a neat super-wide hi-res screen).
Furthermore, the indentation steals and wastes increasingly large amounts of precious screen real etate. And please note that e.g. logs and code examples are best viewed when lines are not broken too much.
This is an unecessary and most irritating feature. Please remove it.