**{{Bug|857480}} – [TABLET] Tabs thumbnails are never displayed/updated
**{{Bug|857547}} - The awesomescreen is dismissed when the share pop-up is displayed
**{{Bug|857931}} - The virtual keyboard is not dismissed when scrolling webcontent
**{{Bug|857963}} - The search engine added from Fandango.com does not work
**{{Bug|857965}} - The search engine at movietickets.com does not work unless the website is already opened in one of the existing tabs
*'''Known'''
**{{Bug|753710}} – Download is displayed as completed if the Wifi connection is lost when the download is initiated in a new tab
**{{Bug|779739}} - No limitation on additional entries created for manually added search engines
**{{Bug|739159}} - Loading very large images causes Nightly to run OOM
**{{Bug|819780}} - When scrolling after opening new tab in background, current page jumps back to pre-scroll spot when background tab loads
**{{Bug|836677}} - Copied link should be announced by a toaster notification
**{{Bug|680365}} - Content of m.youtube.com, mobile.twitter.com is not displayed if "Allow Cookies" is set to "No"
**{{Bug|443564}} - Implement window.toStaticHTML
**{{Bug|446344}} - Implement Origin header CSRF mitigation
**{{Bug|471020}} - Add X-Content-Type-Options: nosniff support to Firefox
**{{Bug|528661}} - (xssfilter) Heuristics to block reflected XSS (like in IE8)