[-Fx-] Firefox 151.0 Release
官方版本152.0預計在 2026年06月16日(美國時間) 台灣時間06月16日~06月17日 更新
151.0.3 Release Note
https://www.mozilla.org/en-US/firefox/151.0.3/releasenotes/
mFixed︰
Fixed an issue where selecting or pasting text in a text field inside a
table cell could disrupt the page layout. (Bug 2041235)
https://bugzilla.mozilla.org/show_bug.cgi?id=2041235
Fixed an issue where the VPN toolbar button icon could appear larger than
intended. (Bug 2042454)
https://bugzilla.mozilla.org/show_bug.cgi?id=2042454
151.0.2 Release Note
https://www.mozilla.org/en-US/firefox/151.0.2/releasenotes/
Fixed︰
Fixed an issue on macOS where smart cards and security keys could fail to
load certificates automatically. (Bug 2041208)
https://bugzilla.mozilla.org/show_bug.cgi?id=2041208
Fixed an issue where adding another tab to an existing Split View could
unexpectedly close it. (Bug 2039795)
https://bugzilla.mozilla.org/show_bug.cgi?id=2039795
Fixed an issue where Split View would close instead of switching tabs when
using the "Switch to Tab" option from the address bar. (Bug 2039787)
https://bugzilla.mozilla.org/show_bug.cgi?id=2039787
Fixed a crash on Windows that occurred when using the Sogou input method to
type Simplified Chinese. (Bug 2039203)
https://bugzilla.mozilla.org/show_bug.cgi?id=2039203
Fixed an issue where Firefox stopped caching new content once the disk
cache was full, causing pages and resources to be re-downloaded from the
network on every visit. (Bug 2031577)
https://bugzilla.mozilla.org/show_bug.cgi?id=2031577
Fixed an issue where some websites could render incorrectly or fail to load
when they used JavaScript to insert WebKit-specific style rules. (Bug 2040693)
https://bugzilla.mozilla.org/show_bug.cgi?id=2040693
Fixed an issue where clicking and selecting text in some input fields and
text areas did not work on pages that styled them with certain CSS rules.
(Bug 2039504)
https://bugzilla.mozilla.org/show_bug.cgi?id=2039504
Fixed an issue where the up and down buttons on number input fields could
overlap and hide the value when sites sized the field to fit its contents.
(Bug 2039315)
https://bugzilla.mozilla.org/show_bug.cgi?id=2039315
Fixed an issue where sorting strings that include numbers could produce an
incorrect order on some websites and web applications. (Bug 2027078)
https://bugzilla.mozilla.org/show_bug.cgi?id=2027078
Fixed an issue where dropdown menus would not open for <select> elements
created inside an iframe and then moved into the parent page. (Bug 2041720)
https://bugzilla.mozilla.org/show_bug.cgi?id=2041720
151.0.1 Release Note
https://www.mozilla.org/en-US/firefox/151.0.1/releasenotes/
Fixed︰
Fixed a crash experienced by users with Intel Raptor Lake CPUs.
(Bug 1950764)
https://bugzilla.mozilla.org/show_bug.cgi?id=1950764
Fixed an issue on Windows where some websites using WebSerial to flash
device firmware could fail unexpectedly. (Bug 2040754)
https://bugzilla.mozilla.org/show_bug.cgi?id=2040754
151.0 Release Note
https://www.mozilla.org/en-US/firefox/151.0/releasenotes/
New︰
Firefox Home (New Tab) has a fresh, new look and feel. The layout and
design will enable upcoming features, from widgets to shortcuts improvements,
launching between 151 and 152. Included are some new and exciting Wallpapers,
such as the one below. Use the pencil icon in the lower right to check them
out.
https://i.meee.com.tw/jRAtbhs.png


Private Browsing Mode now allows you to instantly clear all data from your
current session without closing the entire window. When you select the End
Private Session button (the fire icon) to the right of the URL bar, Firefox
will ask you to confirm to clear your session. Once confirmed, it will wipe
all of your private browsing data and open a fresh new Private Browsing Mode
session for you.
https://i.meee.com.tw/1Kw9nDx.png

Firefox now strengthens protection against fingerprinting in Standard
Enhanced Tracking Protection, making it harder for websites to track you
across sites by limiting the amount of information revealed about your device
and browser. This reduces the number of users uniquely identifiable by common
fingerprinting techniques by an average of ~14%, and by ~49% on macOS.
https://support.mozilla.org/kb/enhanced-tracking-protection-firefox-desktop
You can now merge multiple PDFs directly in the Firefox PDF viewer.
https://i.meee.com.tw/6SZp37b.png

The Translations page (about:translations) is now accessible through the
More Tools section of the Application Menu.
Local Firefox profile backups are now available on Linux in addition to
Windows, and you can restore them across platforms.
https://support.mozilla.org/kb/firefox-backup
On macOS, URLs copied from iOS devices using Apple’s Universal Clipboard
now paste correctly in Firefox.
On macOS, dropdown menus on web pages now use the native macOS menu style,
matching the look and behavior of the rest of the system.
Address Autofill is enabled for users in the Netherlands.
https://support.mozilla.org/kb/automatically-fill-your-address-web-forms
Fixed︰
Fixed incorrect screen resolution reporting to websites in multi-monitor
setups.
Fixed an issue on macOS where maximized Firefox windows could reopen on the
wrong monitor after relaunching in multi-monitor setups.
Improved color management for copied and pasted images on macOS.
Various security fixes.
https://www.mozilla.org/security/advisories/mfsa2026-46
Changed︰
The search bar in Firefox Settings (about:preferences) is now larger and
spans the full width of the settings content area, making it easier to find
options.
Extensions and Themes installed in a Firefox Desktop profile directory will
be restored successfully after the profile directory is moved or restored to
a different location or a different operating system.
Geolocation on Windows now respects the user's Windows location permission
setting, instead of overriding it, when the user grants location permission
to a page. Firefox will ask users to enable the Windows permission if it is
needed.
Enterprise︰
https://support.mozilla.org/kb/firefox-enterprise-151-release-notes
Developer︰
Developer Information
https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/151
Web Platform︰
You can now manage microcontrollers that support serial communications in
Firefox via the Web Serial API. This lets you program microcontrollers and
development boards, such as ESP devices, Raspberry Pi Picos, 3D printers, CNC
machines, and other devices. Web Serial can be used in Extensions, but not
from moz-extension contexts at this time.
https://developer.mozilla.org/docs/Web/API/Web_Serial_API
Local network access restrictions are now rolling out to all users. Firefox
requires websites to request permission before connecting to devices on your
local network or to apps and services on your device. Previously, this
protection was limited to users with Enhanced Tracking Protection set to
Strict.
The new Fullscreen Keyboard Lock API adds an optional argument to
requestFullscreen that allows websites to request that while fullscreen,
pressing the Escape key will no longer exit fullscreen (instead, a long-press
is required), and certain formerly-reserved browser hotkeys are allowed to be
default-prevented.
Firefox improves the rendering of absolutely positioned elements across
multi-column containers and when printing, producing more accurate
positioning and fragmentation.
@container rules now allow specifying a list of container query conditions
rather than a single condition.
https://developer.mozilla.org/docs/Web/CSS/Reference/At-rules/@container
Firefox now supports container style queries, allowing styles to be applied
to an element based on the computed values of its container's custom
properties. This can be done by using one or more style() functions inside
@container rules.
https://mzl.la/3PtYOYA
https://developer.mozilla.org/docs/Web/CSS/Reference/At-rules/@container
A new CSSContainerRule.conditions property was introduced, holding an array
of all container query conditions. This new property is intended to replace
CSSContainerRule.containerName and CSSContainerRule.containerQuery, which
only supported a single name and query, making them deprecated.
Updated the behavior of implicit anchors in CSS Anchor Positioning. The
position-anchor property now defaults to normal. When using position-area,
implicit anchors are applied automatically, while popovers using anchor() or
anchor-center now require position-anchor: auto to opt in.
https://developer.mozilla.org/docs/Web/CSS/Guides/Anchor_positioning
https://mzl.la/4uVOdEL
Firefox now supports the Document Picture-in-Picture API, which allows web
pages to place content in an always-on-top popup.
https://developer.mozilla.org/docs/Web/API/Document_Picture-in-Picture_API
Temporary site permissions are now correctly reflected in the Permissions
API.
https://developer.mozilla.org/docs/Web/API/Permissions_API
Firefox now supports the declarative definition of slot assignment behavior
for shadow roots.
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