Mozilla Firefox Version 57.0

Firefox Notes
Version 41.0, first offered to Release channel users on September 22, 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
  Enhance IME support on Windows (Vista +) using TSF (Text Services Framework)
  
  
• NEW
  Ability to set a profile picture for your Firefox Account
  
  
• NEW
  Firefox Hello now includes instant messaging
  
  
• NEW
  SVG images can be used as favicons
  
  
• NEW
  Improved box-shadow rendering performance
  
  
• CHANGED
  WebRTC now requires perfect forward secrecy
  
  
• CHANGED
  WARP is disabled on Windows 7
  
  
• CHANGED
  Updates to image decoding process
  
  
• CHANGED
  Support for running animations of 'transform' and 'opacity' on the compositor thread
  
  
• HTML5
  MessageChannel and MessagePort API enabled by default
  
  
• HTML5
  Added support for the transform-origin property on SVG elements
  
  
• HTML5
  CSS Font Loading API enabled by default
  
  
• HTML5
  Navigator.onLine now varies with actual internet connectivity (Windows and Mac OS X only)
  
  
• HTML5
  Copy/Cut Web content from JavaScript to the OS clipboard with document.execCommand("cut"/"copy")
  
  
• HTML5
  Implemented Cache API for querying named caches that are accessible Window, Worker, and ServiceWorker
  
  
• DEVELOPER
  Removed support for binary XPCOM components in extensions, use addon SDK "system/child_process" pipe mechanism for native binaries instead
  
  
• DEVELOPER
  Network requests can be exported in HAR format
  
  
• DEVELOPER
  Quickly add new CSS rule with New Rule button in the Inspector
  
  
• DEVELOPER
  Screenshot a node or element from markup view with the Screenshot Node context menu item
  
  
• DEVELOPER
  Copy element CSS rule declarations with the Copy Rule Declaration context menu item in the Inspector
  
  
• DEVELOPER
  Pseudo-Class panel in the Inspector
  
  
• FIXED
  Picture element does not react to resize/viewport changes
  
  
• FIXED
  Various security fixes

Click to expand...

What’s New

• Reference: Release notes for Firefox 41.0.1
  
  
• FIXED
  Various security fixes

Click to expand...

What’s New

• NEW
  Reference: Release notes for Firefox 41.0
  
  
• FIXED
  Fix a startup crash with some Intel Media Accelerator 3150 graphic cards (1207665)
  
  
• FIXED
  Fix a graphic crash, occurring occasionally on Facebook (1178601)
  
  
• FIXED
  Fix a regression in the bookmark creation (1206376)
  
  
• FIXED
  Fix potential hangs with Flash plugins (1185639)
  
  
• FIXED
  Fix a startup crash related to Yandex toolbar and Adblock Plus (1209124)
  
  
• FIXED
  Crash when serializing a principal with unknown app id (1205456)

Click to expand...

What’s New

• NEW
  
  Private Browsing with Tracking Protection blocks certain Web elements that could be used to record your behavior across sites
  
  
• NEW
  Control Center that contains site security and privacy controls
  
  
• NEW
  Indicator added to tabs that play audio with one-click muting
  
  
• NEW
  WebRTC improvements:
  
  • IPV6 support
  • Preferences for controlling ICE candidate generation and IP exposure
  • Hooks for extensions to allow/deny createOffer/Answer
  • Improved ability for applications to monitor and control which devices are used in getUserMedia
• NEW
  Login Manager improvements:
  
  • Improved heuristics to save usernames and passwords
  • Edit and show all logins in line, Copy/Paste usernames/passwords from the Context menu
  • Migration imports your passwords to Firefox from Google Chrome for Windows and Internet Explorer; import anytime from the Login Manager
• CHANGED
  Improved performance on interactive websites that trigger a lot of restyles
  
  
• HTML5
  Implemented ES6 Reflect
  
  
• HTML5
  Support ImageBitmap and createImageBitmap()
  
  
• HTML5
  Media Source Extension for HTML5 video available for all sites
  
  
• DEVELOPER
  View HTML source in a tab
  
  
• DEVELOPER
  Remote website debugging over WiFi (no USB cable or ADB needed)
  
  
• DEVELOPER
  Asynchronous call stacks now allow web developers to follow the code flow through setTimeout, DOM event handlers, and Promise handlers.
  
  
• DEVELOPER
  Configurable Firefox OS Simulator in WebIDE, to simulate reference devices like phones, tablets, even TVs
  
  
• DEVELOPER
  CSS filter presets in the Inspector
  
  
• DEVELOPER
  Ability to save filter presets inside CSS Filter Tooltip
  
  
• FIXED
  Various security fixes
  

Known Issues

• UNRESOLVED
  URLs containing a Unicode-format Internationalized Domain Name (IDN) are not redirected properly, leading to a Server Not Found error.

Click to expand...

What’s New

• NEW
  Private Browsing with Tracking Protection offers choice of blocking additional trackers
  
  
• NEW
  Improved API support for m4v video playback
  
  
• NEW
  Firefox 64-bit for Windows is now available via the Firefox download page
  
  
• NEW
  Users can choose search suggestions from the Awesome Bar
  
  
• NEW
  On-screen keyboard displayed on selecting input field on devices running Windows 8 or greater
  
  
• NEW
  Firefox Health Report has switched to use the same data collection mechanism as telemetry
  
  
• DEVELOPER
  Markup view shows indicators for pseudo-classes locked for elements
  
  
• DEVELOPER
  Bind F1 key to open the settings when the toolbox is focused
  
  
• DEVELOPER
  New 'Use in Console' context menu item in Inspector to store selected element in a temporary variable
  
  
• DEVELOPER
  Search button next to overridden CSS properties to find similar properties in the rules view
  
  
• DEVELOPER
  Ability to filter styles from their property names in the rules view
  
  
• DEVELOPER
  Stack traces are now shown for exceptions inside the console
  
  
• DEVELOPER
  Added ability to display server-side logs in the console
  
  
• DEVELOPER
  Ability to choose resolution for the GCLI screenshot command
  
  
• DEVELOPER
  Subresource integrity allows developers to make their sites more secure
  
  
• DEVELOPER
  Network requests in Console now link to Network panelinstead of opening in a popup
  
  
• DEVELOPER
  Unprefixed 'hyphens' property is now supported
  
  
• DEVELOPER
  WebIDE now has a sidebar-based UI
  
  
• DEVELOPER
  The 'transform-origin' property is now supported on SVG elements
  
  
• DEVELOPER
  Animation inspector now displays animations in a timeline
  
  
• DEVELOPER
  Single-process mode is no longer supported for NPAPI plugins
  
  
• FIXED
  Eyedropper tool does not work as expected when page is zoomed
  
  
• FIXED
  Various security fixes

Click to expand...

43.0.1
Firefox Release
December 18, 2015
Version 43.0.1, first offered to Release channel users on December 18, 2015
We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
fixed
Prepare to use SHA-256 signing certificate for Windows builds, to meet new Microsoft signing requirement (1079858)
Reference: Release notes for Firefox 43.0.1

Click to expand...

43.0.2
Firefox Release

December 22, 2015

Version 43.0.2, first offered to Release channel users on December 22, 2015
We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!

fixed
Various stability and security fixes
changed
Use a SHA-256 signing certificate for Windows builds, to meet new signing requirements

Click to expand...

43.0.3
Firefox Release
December 28, 2015
Version 43.0.3, first offered to Release channel users on December 28, 2015
We'd also like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox!
fixed
Fix network issue when using Nvidia's Network Access Manager (1233237)
On some Windows configurations, improve the decoding of some videos on YouTube (1233970)

Click to expand...

43.0.4
Firefox Release

January 6, 2016

Version 43.0.4, first offered to Release channel users on January 6, 2016


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



fixed

• Fix for startup crash for users of a third party antivirus tool (Bug 1235537)
  
  
• Multi-user GNU/Linux download folders can be created (Bug 1233434)

Click to expand...

Version 44.0, first offered to Release channel users on January 26, 2016

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

• Improved warning pages for certificate errors and untrusted connections
• Enable H.264 if system decoder is available
• Enable WebM/VP9 video support on systems that don't support MP4/H.264
• In the animation-inspector timeline, lightning bolt icon next to animations running on the compositor thread
• Support the brotli compression format via HTTPS content-encoding
• Screenshot commands allow user choice of pixel ratio in Developer Tools
• fixed
• • Windows XP and Vista screensaver doesn't disable when watching videos (Bug 1193610)
  • Various security fixes
  • changed
  • • To support unicode-range descriptor for webfonts, font matching under Linux now uses the same font matching code as other platforms
    • Use a SHA-256 signing certificate for Windows builds, to meet new signing requirements
    • Firefox has removed support for the RC4 decipher
    • Firefox will no longer trust the Equifax Secure Certificate Authority 1024-bit root certificate or the UTN - DATACorp SGC to validate secure website certificates
    • Stricter validation of web fonts
    • On-screen keyboard support temporarily turned off for Windows 8 and Windows 8.1

Click to expand...

44.0.1
Firefox Release

February 8, 2016

Version 44.0.1, first offered to Release channel users on February 8, 2016


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



fixed

• Fix issue which could lead to the removal of stored passwords under certain circumstances (1242176)
  
  
• Allows spaces in cookie names (1244505)
  
  
• Fix WebSockets when used in a Service Worker context (1243942)
  
  
• Disable opus/vorbis audio with H.264 (1245696)
  
  
• Require NSS 3.21 (1244069)
  
  
• Ship the Gecko SDK (1243740)
  
  
• Fix for graphics startup crash (GNU/Linux) (1222171)
  
  
• Fix a crash in cache networking (1244076)

Click to expand...

44.0.2
Firefox Release

February 11, 2016

Version 44.0.2, first offered to Release channel users on February 11, 2016


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



fixed

• Firefox hangs or crashes on startup (1243098)
  
  
• Various security fixes

Click to expand...

Version 45.0, first offered to Release channel users on March 8, 2016



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



new

• Instant browser tab sharing through Hello
  
  
• Tabs synced via Firefox Accounts from other devices are now shown in dropdown area of Awesome Bar when searching
  
  
• Synced Tabs button in button bar
  
  
• Introduce a new preference (network.dns.blockDotOnion) to allow blocking .onion at the DNS level
  
  
• Guarani [gn] locale added
  

fixed

• URLs containing a Unicode-format Internationalized Domain Name (IDN) are now properly redirected
  
  
• Various security fixes
  

changed

• Tab Groups (Panorama) feature removed
  

developer

• Ability to filter snapshot output in memory tool
  
  
• Fine tune animations by changing the playback rate of animations in the animation-inspector's timeline
  
  
• DOMContentLoaded and load events shown in the network monitor timeline
  
  
• Added Negative url filtering for the network monitor
  
  
• Support for diffing heap snapshots added to the memory tool
  
  
• Inspector search now matches results from all content in the page, including subframes
  
  
• List of animated properties and keyframes is now displayed when clicking on an animation in the animation-inspector’s timeline

Click to expand...

45.0.1
Firefox Release

March 16, 2016

Version 45.0.1, first offered to Release channel users on March 16, 2016


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



fixed

• Fix a regression causing search engine settings to be lost in some context (1254694)
  
  
• Bring back non-standard jar: URIs to fix a regression in IBM iNotes (1255139)
  
  
• XSLTProcessor.importStylesheet was failing when <import> was used (1249572)
  
  
• Fix an issue which could cause the list of search provider to be empty (1255605)
  
  
• Fix a regression when using the location bar (1254503)
  
  
• Fix some loading issues when Accept third-party cookies: was set to Never (1254856)
  

changed

• Disabled Graphite font shaping library

Click to expand...

Version 45.0.2, first offered to Release channel users on April 11, 2016



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



fixed

• Fix an issue impacting the cookie header when third-party cookies are blocked (1257861)
  
  
• Fix a web compatibility regression impacting the srcset attribute of the image tag (1259482)
  
  
• Fix a crash impacting the video playback with Media Source Extension (1258562)
  
  
• Fix a regression impacting some specific uploads (1255735)
  
  
• Fix a regression with the copy and paste with some old versions of some Gecko applications like Thunderbird (1254980)

Click to expand...

46.0
Firefox Release

April 26, 2016

Version 46.0, first offered to Release channel users on April 26, 2016


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



new

• Improved security of the JavaScript Just In Time (JIT) Compiler
  
  
• GTK3 integration (GNU/Linux only)

fixed

• Correct rendering for scaled SVGs that use a clip and a mask
  
  
• Various security fixes
  
  
• Screen reader behavior with blank spaces in Google Docs corrected

changed

• WebRTC fixes to improve performance and stability

developer

• Display dominator trees in Memory tool
  
  
• Allocation and garbage collection pause profiling in the performance panel
  
  
• Launch responsive mode from the Style Editor @media sidebar

Click to expand...