View notes for:

Firefox Notes (First offered to release channel users on March 7, 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.

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

What’s New

  • FIXED
    19.0.2: Security-driven release, see details in the associated security advisory
  • NEW
    Added theme support
  • NEW
    Support for Traditional Chinese and Simplified Chinese localizations
  • CHANGED
    Lowered minimum CPU requirement to 600MHz
  • CHANGED
    Canvas elements can export their content as an image blob using canvas.toBlob()
  • HTML5
    CSS @page is now supported
  • HTML5
    CSS viewport-percentage length units implemented (vh, vw, vmin and vmax)
  • HTML5
    CSS text-transform now supports full-width
  • FIXED
    Certain valid WebGL drawing operations are incorrectly rejected, leaving incomplete rendering in affected pages (825205)
  • FIXED
    Holding backspace may delete text both in front of and behind the cursor (770291)

Known Issues

  • Unresolved
    Some recent changes in the Google layout and CSS may cause issues in non-webkit browsers like Firefox (see 668288)
  • Unresolved
    Firefox for Android uses the same locale as your system language settings (see 695565)
  • 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
    Tablets - home tab thumbnails may appear cut off (see 824483)
    Unresolved on v19 Resolved in v20