I just updated to WP 3.9 and I'm using Chrome. I'm using the Pro version. When I edit a slideshow and click "Add Images" the media uploader popup comes up, but the entire left side is behind the WordPress navigation (dashboard, posts, pages, etc). So essentially I can't get to the 'upload image' link. Not a big deal because you can drag and drop but just wanted to mention it. Happens on both my PC and Mac
This doesn't happen in Firefox, but just thought I'd point it out in case I wasn't the only one. Love the plugin.