User blog comment:Rappy 4187/Technical Update: May 20, 2015/@comment-1605682-20150521234229/@comment-126761-20150522020731

I made a small tweak to fix the wrapping issue in this edit:. The border now goes all the way across the column - hopefully this is okay; it seems to match the style of the rest of the page headings!

The issue was that the border had a set distance from the right side - when the text got slightly larger, there wasn't enough space left.