Support/Firefox139

From MozillaWiki
Jump to navigation Jump to search

Firefox 139 release information

Disclaimer

The following information is intended for members of the Mozilla Support community for the purpose of supporting users in the Mozilla Support platform. Mozilla Support is a community of enthusiastic volunteers and employees trying to support Mozilla's users around the globe. You can join us by contributing through the following ways:

Note.png
To learn more about how to stay updated with Firefox release information, trending, and known issues, please also check out How to stay updated with Firefox release

Release notes

Dot releases

Platform Version Release date Notable fixes Unresolved
Firefox Desktop 139.0.1 May 29, 2025 Graphics corruption with certain NVIDIA graphics adapter and multiple monitors running at mixed refresh rates after updating to Firefox 139 (bug1968876) -
Firefox & Focus for Android 139.0.2 June 3, 2025 Fixed the "Translate page" menu option sometimes not consistently appearing when expected. (Bug 1965261) -
Firefox & Focus for Android 139.0.3 June 4, 2025 Mitigated a recently-disclosed privacy leak. The leak was caused by other apps installed on the phone that created and listened on ports accessed by the browser. -
Firefox Desktop 139.0.4 June 10, 2025 Various bugs and security fixes -
Firefox & Focus for Android 139.0.4 June 10, 2025 Various security fixes and further enhancement to the Local Mess privacy leak. -

Bug & feedback boards

Contributor discussions

Please refer to the following contributor forum threads to learn more about known issues and discuss with other contributors:

You can also join our Matrix channel to ask questions/join community discussion.

Stay updated

Apart from sharing release information, there are other ways to stay updated with product release and community updates:

  • Community call: We run a monthly community call (usually on the same week we release a new Firefox version). Check our schedule here and don't hesitate to join the call in person if you can!
  • Newsletter: Consider subscribing to Firefox Daily Digest to get daily updates (Mon-Fri) about Firefox from across the internet.

What's new in Firefox 139

Note.png
Content in this page is being updated periodically as we're rolling out the release.

Firefox Desktop content update

Sidebar article update
Description: Update to the sidebar article to remove How can we improve the sidebar and vertical tabs?
Content request: https://bugzilla.mozilla.org/show_bug.cgi?id=1963913
KB article: https://support.mozilla.org/kb/use-sidebar-access-tools-and-vertical-tabs Article update
Chrome import changes on Windows
Description: Article update due to a recent change in how Chrome encrypts data
Content request: https://bugzilla.mozilla.org/show_bug.cgi?id=1965232
KB articles: https://support.mozilla.org/kb/import-bookmarks-google-chrome Article update
https://support.mozilla.org/kb/import-data-another-browser Article update


Firefox for Android content update

No content update

Firefox for iOS content update

Unified Privacy panel rollout
Description: New unified privacy panel in iOS
Content request: https://bugzilla.mozilla.org/show_bug.cgi?id=1966734
KB article: https://support.mozilla.org/kb/enhanced-tracking-protection-firefox-ios Article updated

Known studies/experiments

Platform Studies/experiments Description Related discussions Forum tag
Firefox for Android Android tablet address bar moved on top of the screen - [1] browser-appearance
Firefox for Android Search box in the middle of home screen
Screen Shot 2025-05-28 at 8.35.07 AM.png
- -
Firefox for Android Remove all content (including Jump Back In, Bookmarks, Recently Visited) from home screen except Shortcuts and Stories - - -

Known/Trending issues(s)

Platform Issue Known bug/Related discussions Fix/workaround
Desktop Password from Chrome are not imported with the migration wizard bug1960560 A fix is coming in version 139
Android Back button jumps to first entry in tab's history rather than previous entry bug1958609 Fix is coming in version 139
Android Don't show the empty state while bookmarks are loading bug1957713 Fix will land in version 140
Android Unexpected client auth certificate request dialogs bug1966033 Fix will land in version 140
Android spacebar and backspace working abnormaly in google search bar bug1968872 Investigating
Android Nightly Unable to disable private tab locking in Firefox Nightly bug1965720 User can disable the lock by going to Settings - Private browsing and disable the "Use screen lock to hide tabs in private browsing" option.

Top requests

Platform Request Related discussions Status
iOS Default page zoom setting [2] In progress
iOS Translate feature in Firefox for iOS [3] Tracking
Android Android address bar is too cluttered [4] [5] Tracking
Desktop Differentiate "Site you save" and "Sites you visit" in new tab [6] [7] Tracking

Investigating

Platform Issue Known bug/Related discussions Fix/workaround
Desktop Taskbar Appearing when playing Full Screen Videos bug1964241 See [8]
Android Landscape mode on Android tablets doesn't show up in full screen bug1969918 Looks like a device-specific issue (only impact users on Vivo tablet)
Android Broken web address autocompletion [9] We found out that the feature was recently removed
iOS User is redirected to Google app after force-closing and reopening Firefox if a Google search is open https://github.com/mozilla-mobile/firefox-ios/issues/26361 Investigating

Known incident(s)

Issue with multiple monitors with different refresh rates on Windows
Description: Multiple monitor refresh rates cause severe glitching/artifacting on Windows desktop
Status: Resolved
Product(s) impacted: Firefox Desktop on Windows
Associated bug: [10]
Resolution/workaround: We released 139.0.1 to fix this issue


Post-release

Retrieved from "https://wiki.mozilla.org/index.php?title=Support/Firefox139&oldid=1254377"