Firefox Nightly 19, weeks 1-6

Speed & memory:

  • Fixed: 715402 - Wait until chrome is painted before executing code not critical to making the initial window visible.
  • Fixed: 756313 - Don't load homepage URI before first paint.
  • Fixed: 750417 - Closing a tab reflows the entire tab bar during the animation, making the animation crappy.
  • Fixed: 811176 - Clean up JIT code more aggressively.

For more, read Taras's Snappy blog and Nick's MemShrink blog.

New web technologies:

For more, read Firefox 19 for developers.

Security improvements:

  • Fixed: 799009 - Remove support for obsolete SSL-related warning prompts.
  • Fixed: 788653 - Make enablePrivilege pref name more dire.
  • Fixed: 801576 - Align Gecko and the spec on cross-origin access to window.history.
  • Fixed: 803181 - Change update background download interval from 10 minutes to 1 minute and update check interval from 24 hours to 12 hours.

Other notable fixes:

  • Fixed: 661881 - Implement about:telemetry.
  • Fixed: 486918 - [Windows, Linux] Improve image downscaling.

All 3995 changes between FIREFOX_AURORA_18_BASE and FIREFOX_AURORA_19_BASE

One Response to “Firefox Nightly 19, weeks 1-6”

  1. Manoj Mehta Says:

    Hey Jesse,

    Would it be possible for a malicious site to inject javascript into the pref for “about:newtab” urls as implemented in