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Firefox Notes (First offered to release channel users on May 14, 2013)

Check out "What’s New" and "Known Issues" for this version of Firefox for mobile below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.We'd also like extend a special thank you to all of the new Mozillians who contributed to Firefox 21!

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

What’s New

  • NEW
    Shipping Open Sans and Charis fonts for Web Content
  • NEW
    Ability to save media files on long tap
  • NEW
    Access to recent history through back/forward buttons
  • CHANGED
    Polished UI based on Holo theme
  • CHANGED
    CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none (bug 816298)
  • CHANGED
    Graphics related performance improvements (bug 809821)
  • CHANGED
    Removed E4X support from Spidermonkey
  • DEVELOPER
    Implemented Remote Profiling
  • DEVELOPER
    Integrated, Add-on SDK loader and API libraries into Firefox
  • DEVELOPER
    DOM/content implemententation for <input type='time'> Associated bugs
  • HTML5
    Added support for <main> element
  • HTML5
    Implemented scoped stylesheets
  • HTML5
    Added support for window.crypto.getRandomValues
  • FIXED
    Download Manager page is not updated after clearing private data (777639)
  • FIXED
    In content UI cut off on small screens (840593)
  • FIXED
    21.0: Security fixes can be found here

Known Issues

  • Unresolved
    Topsites tab is showing an entry with blank content (see 857661)
    Unresolved on v21 Resolved in v22
  • Unresolved
    Some recent changes in the Google layout and CSS may cause issues in non-webkit browsers like Firefox (see 668288)
  • Unresolved
    Font inflation may sometimes render inconsistent font sizes on certain pages (see 707195)
  • Unresolved
    Firefox Sync will not behave as expected if multiple Firefox channels are installed on a single device (see 761206)
  • Unresolved
    'Video can't be played because the file is corrupt' on some HTC Gingerbread (Android 2.3) devices (see 829454)
  • Unresolved
    Private Browsing - can't see URL bar text on variant of HTC Sense UI (Froyo) (see 833351)