官方版本121.0預計在 2023年12月19日(美國時間) 台灣時間12月19日~12月20日 更新
120.0.1 Release Note
https://www.mozilla.org/en-US/firefox/120.0.1/releasenotes/
Fixed︰
Fixed a bug that was causing persistent startup slowdowns. (bug 1867095)
https://bugzilla.mozilla.org/show_bug.cgi?id=1867095
Fixed an issue that was causing 100% CPU usage on sites such as Google
Maps. (bug 1866409)
https://bugzilla.mozilla.org/show_bug.cgi?id=1866409
Fixed an issue that was causing YouTube videos to show a green screen
when hardware acceleration was enabled. (bug 1865928)
https://bugzilla.mozilla.org/show_bug.cgi?id=1865928
Fixed an issue where the status bar was still visible when viewing
fullscreen video. (bug 1853896)
https://bugzilla.mozilla.org/show_bug.cgi?id=1853896
Fixed a startup crash affecting Linux users on some aarch64 systems with
page sizes other than 4KB. (bug 1866025)
https://bugzilla.mozilla.org/show_bug.cgi?id=1866025
120.0 Release Note
https://www.mozilla.org/en-US/firefox/120.0/releasenotes/
New︰
Firefox supports a new “Copy Link Without Site Tracking” feature in the
context menu which ensures that copied links no longer contain tracking
information.
https://i.imgur.com/i8AwnIo.png
Firefox now supports a setting (in Preferences → Privacy & Security) to
enable Global Privacy Control. With this opt-in feature, Firefox informs the
https://globalprivacycontrol.org/
websites that the user doesn’t want their data to be shared or sold.
https://i.imgur.com/gEWvJB4.png
Firefox’s private windows and ETP-Strict privacy configuration now enhance
the Canvas APIs with Fingerprinting Protection, thereby continuing to protect
our users’ online privacy.
Firefox has enabled Cookie Banner Blocker by default in private windows for
all users in Germany. Firefox will now auto-refuse cookies and dismiss
annoying cookie banners for supported sites.
Firefox has enabled URL Tracking Protection by default in private windows
for all users in Germany. Firefox will remove non-essential URL query
parameters that are often used to track users across the web.
Firefox now imports TLS trust anchors (e.g., certificates) from the
operating system root store. This will be enabled by default on Windows, macOS,
and Android, and if needed, can be turned off in settings (Preferences →
Privacy & Security → Certificates).
Keyboard shortcuts have now been added for editing and deleting a selected
credential on about:logins. For editing - Alt + enter (Option + return on
macOS) and for deleting - Alt + Backspace (Option + Delete on macOS).
Users on Ubuntu Linux now have the ability to import from Chromium when
both are installed as Snap packages.
Picture-in-Picture now supports corner snapping on Windows and Linux - just
hold Ctrl as you move the PiP window.
Fixed︰
Various security fixes.
https://www.mozilla.org/security/advisories/mfsa2023-49/
Enterprise︰
https://support.mozilla.org/kb/firefox-enterprise-120-release-notes
Developer︰
https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/120
The User Activation API has now been added, allowing JavaScript to check if
https://developer.mozilla.org/docs/Web/API/UserActivation
the user currently is or has been active with the page (clicking, etc) with
navigator.userActivation.
Early Hints Preconnect, the informational status code 103, is now enabled.
https://developer.mozilla.org/docs/Web/HTTP/Status/103
This allows servers to send resource Link headers before the final HTTP
response and improves performance on servers using this feature. (read more)
https://blog.cloudflare.com/early-hints/
Users can now use an added devtools feature to simulate browser tabs to be
offline.
The Style Editor panel now features a new "Pretty Print" button located in
the footer of the panel, similar to the pretty print button found in the
Debugger panel. This can be used to format stylesheets (e.g., those that are
minified). The previous functionality, where minified files were
automatically formatted, has been removed.
The Rules panel within the Inspector panel now displays colors in the new
CSS Color 4 formats (e.g., OKLCH) as hexadecimal/named colors. This ensures
that it matches the original values used by the current page.
Web Platform︰
lh and rlh units can now be parsed and computed correctly as lengths.
This allows authors to specify lengths in terms of the element's (or the root
element's) line height.
https://developer.mozilla.org/docs/Web/CSS/length
WebAssembly GC is now enabled by default, which allows new languages,
such as Dart or Kotlin, to run on Firefox. This makes it possible for
reference cycles between the guest language and host browser to be collected.
https://github.com/WebAssembly/gc/blob/main/proposals/gc/Overview.md
https://docs.flutter.dev/platform-integration/web/wasm
https://kotlinlang.org/docs/wasm-overview.html#browser-support