You are viewing information archived from Mozilla.org on 2014-08-13.

View notes for:

Firefox Notes (First offered to release channel users on August 28, 2012)

Check out "What��s New" and "Known Issues" for this version of Firefox below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

If interested, please see the complete list of changes in this release.

What’s New

  • NEW
    Silent, background updates
  • NEW
    Support for SPDY networking protocol v3
  • NEW
    WebGL enhancements, including compressed textures for better performance
  • NEW
    Localization in Maithili (see all available locales)
  • CHANGED
    Optimized memory usage for add-ons
  • DEVELOPER
    JavaScript debugger integrated into developer tools
  • DEVELOPER
    New layout view added to Inspector
  • DEVELOPER
    High precision event timer implemented
  • DEVELOPER
    The CSS word-break property has been implemented.
  • DEVELOPER
    New responsive design tool allows web developers to switch between desktop and mobile views of sites
  • HTML5
    Native support for the Opus audio codec added
  • HTML5
    The <audio> and <video> elements now support the played attribute
  • HTML5
    The <source> element now supports the media attribute
  • FIXED
    Focus rings keep growing when repeatedly tabbing through elements (720987)

Known Issues

  • Unresolved
    Debugger breakpoints do not catch on page reload (see 783393)
    Unresolved on v15 Resolved in v16
  • Unresolved
    If you try to start Firefox using a locked profile, it will crash (see 573369)
  • Unresolved
    For some users, scrolling in the main GMail window will be slower than usual (see 579260)
  • Unresolved
    Windows: The use of Microsoft's System Restore functionality shortly after updating Firefox may prevent future updates (see 730285)