Breadcrumbs = Genesis Theme Settings.
1. Breadcrumbs now disabled in Genesis Theme Settings.
2. No Change; content section does not match sidebar section.
Appfinite has such great themes! And until the HTML5 upgrade, setting solid colored backgrounds for pages/posts was not a problem.
So I strongly suspect this issue is connected to HTML5; just not familiar enough with HTML5 to fix it myself.
Any other ideas? Your input greatly appreciated!