Thread:JinxTheFunhouse/@comment-24930713-20150523071636/@comment-5774380-20150620043738

Well, the thing is, that I'm not sure if that's actually a bug. The details of the changes are here. They did an investigation about the most used resolutions by users and the best widths for each one, so I don't know if I should touch them. For example, in my tests it seemed that if I fix the problem with your resolution, I will break my own resolution. :P

And I guess it has more to do with the fact that you use to browse with your browser not maximized. That causes the CSS to "think" that you have a lower resolution than you actually have, so it tries to adapt to the smallest space and hence the narrower columns.