User blog comment:Kirkburn/Technical Update: October 1, 2013/@comment-10875806-20131002201432/@comment-126761-20131003152308

Thanks for the feedback. The issues you describe are part of our reason for working on the Darwin fluid width updates, allowing the content area to make better use of available browser area.

Allowing content to cover the right rail, however, has never really been intended. As the contents of the right rail may change over time (and logged out users do sometimes see ads there), it's not good for it to be used (or relied upon) as an extension of the content area.

Could you send in some particular examples of the issues to Special:Contact?