Firefox Notes

Version 36.0, first offered to Release channel users on February 27, 2015

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.

We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!

What’s New

  • New

    New Tablet user interface

  • New

    Support for the full HTTP/2 protocol. HTTP/2 enables a faster, more scalable, and more responsive web.

  • New

    Locale added: Maithili (mai) (Android Lollipop only)

  • Changed

    No longer accept insecure RC4 ciphers whenever possible

  • Changed

    Phasing out Certificates with 1024-bit RSA Keys

  • Changed

    Add-on Compatibility

  • HTML5

    Support for the ECMAScript 6 Symbol data type added

  • HTML5

    unicode-range CSS descriptor implemented

  • HTML5

    object-fit and object-position implemented.
    Defines how and where the content of a replaced element is displayed

  • HTML5

    isolation CSS property implemented.
    Create a new stacking context to isolate groups of boxes to control which blend together

  • HTML5

    CSS3 will-change property implemented.
    Hints the browser of elements that will be modified. The browser will perform some performance optimization for these

  • HTML5

    Improved ES6 generators for better performance

  • HTML5

    Changed JavaScript 'const' semantics to conform better to the ES6 specification.
    The const declaration is now block-scoped and requires an initializer. It also can not be redeclared anymore.

  • Fixed

    Various security fixes

  • Fixed

    CSS gradients work on premultiplied colors

  • Fixed

    DNS resolution when using VPNs or switching networks

  • Fixed

    Fix some unexpected logout from Facebook or Google after restart

Known Issues

  • unresolved

    January Chromecast firmware update broke tab mirroring (1131084)

  • unresolved

    On Android 2.3, 3.0 and 4.0, some WebM videos cannot be read properly (1131563)

  • unresolved

    Style Editor: Extra white space appearing above the editor for a sourcemapped scss file (1128747)