Display of thumbnails

You have your Shashin shortcode inside a div with the class “widget-area” and your theme’s stylesheet has set its width to 220px, so the Shashin thumbnails are wrapping to stay within that width. The old version of Shashin was probably breaking the width of that div (which it should not have). So you’re seeing this now that I’ve made improvements to how Shashin manages its thumbnail layout.