I just updated my twenty eleven them to 2.4 and WP to 4.5 and when I refreshed I noticed the right sidebar has shifted down the page on the homepage - it also looks like the homepage page body copy is wider than usual.
Here is the site http://www.NorthFultonsBestHomes.com. Our sister site with the exact same theme and plugins (not updated yet) is how it should look: http://www.EastCobbHomeGuide.com.
Any help would be greatly appreciated. When you update WP you expect improvements, not a broken site!