作者:
rick (可惜沒如果)
2026-08-18 20:59:06官方版本155.0預計在 2026年09月01日(美國時間) 台灣時間09月01日~09月02日 更新
(看schedule 之後好像半個月一個版本 @@)
154.0.1 Release Note
https://www.mozilla.org/en-US/firefox/154.0.1/releasenotes/
Fixed︰
Fixed slower access to saved passwords and unexpected Primary Password
prompts caused by recent changes to password storage. (Bug 2064411, Bug
2065593, Bug 2063993)
https://bugzilla.mozilla.org/show_bug.cgi?id=2064411
https://bugzilla.mozilla.org/show_bug.cgi?id=2065593
https://bugzilla.mozilla.org/show_bug.cgi?id=2063993
Fixed an issue where addresses were failing to autofill on some sites. (Bug
2065145, Bug 2063599)
https://bugzilla.mozilla.org/show_bug.cgi?id=2065145
https://bugzilla.mozilla.org/show_bug.cgi?id=2063599
Fixed Firefox adding a new Start Menu shortcut on Windows every time it
started. (Bug 2064652)
https://bugzilla.mozilla.org/show_bug.cgi?id=2064652
Fixed an issue where connections to local network devices were failing
without a permission prompt on some sites loaded over HTTP. (Bug 2059274)
https://bugzilla.mozilla.org/show_bug.cgi?id=2059274
Fixed a crash that could occur when opening intranet sites that are
configured to link to files on a local network share. (Bug 2064648)
https://bugzilla.mozilla.org/show_bug.cgi?id=2064648
Fixed an issue on Windows where tab titles were cut off at the start when
the system font was MS UI Gothic. (Bug 2056856)
https://bugzilla.mozilla.org/show_bug.cgi?id=2056856
154.0 Release Note
https://www.mozilla.org/en-US/firefox/154.0/releasenotes/
New︰
Firefox's Local Network Access protections now extend to WebSocket
connections. Websites that try to open a WebSocket to a device on the local
network will now ask for permission first.
https://is.gd/M4z9lB
In Smart Window, Firefox can now suggest groups of related tabs and propose
a name for each group.
https://support.mozilla.org/kb/smart-window
https://i.meee.com.tw/VvDgnyi.png
Local Firefox profile backups are now available on macOS in addition to
Windows and Linux, and backups can be restored across all three platforms.
https://support.mozilla.org/kb/firefox-backup
Sites can now be exempted from having their cookies and site data cleared
on shutdown without also being exempted from tracking protection and other
cookie restrictions.
The full-page Translations feature now translates <iframe> content.
https://support.mozilla.org/kb/website-translation
The full-page Translations feature now runs language identification on all
page loads, resulting in an improved experience for offering translations to
users.
Windows users can now choose a different Firefox app icon in Settings. This
is not yet available for MSIX installations, macOS, or Linux, but is coming
soon.
The address bar now includes a Manage AI quick action that opens the AI
controls in Settings.
https://support.mozilla.org/kb/quick-actions-firefox-search-bar
https://support.mozilla.org/kb/firefox-ai-controls
Performing a hard reload on a page (holding Shift while clicking the
Refresh button) now also clears and updates its cached favicons.
Fixed︰
Fixed an issue on macOS where closing a browser window could leave behind
an invisible window that continued to capture mouse clicks over the area where
it used to be.
Fixed an issue on Windows where an auto-hiding taskbar would not appear
until the Firefox window had been minimized and restored after launch.
Fixed an issue where the Windows taskbar would appear in front of a full
screen Picture-in-Picture window.
Fixed the Vertical Tabs sidebar staying visible in full screen mode. It now
hides along with the toolbars and reappears when the cursor moves to the edge
of the screen.
https://support.mozilla.org/kb/how-make-firefox-and-websites-go-full-screen
Fixed PDF documents not being scaled correctly in print preview when the
Fit to Page Width option is used.
Various security fixes.
https://www.mozilla.org/security/advisories/mfsa2026-74/
Changed︰
Video seeking is now significantly faster on all operating systems, making
it quicker to jump to a point in a video.
Text selected in a PDF is now highlighted the same way as text on a web
page, and the highlight color follows operating system settings such as
high-contrast mode.
Firefox View is moving out of the toolbar by default for new profiles and
for profiles where it hasn't been used recently. It can still be opened from
List all tabs > View all tabs, or added back from the Customize toolbar menu.
Enterprise︰
https://support.mozilla.org/kb/firefox-enterprise-154-release-notes
Developer︰
https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/154
The JSON Viewer now shows a breadcrumb path at the bottom for the selected
entry.
Web Platform︰
Firefox now supports the text-box-trim and text-box-edge CSS properties,
and the associated text-box shorthand. These properties control the leading
space above and below text, enabling simpler and more consistent vertical
spacing and alignment.
https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/text-box-trim
https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/text-box-edge
https://developer.mozilla.org/docs/Web/CSS/Reference/Properties/text-box
Firefox now supports the sibling-index() and sibling-count() CSS functions.
These functions allow an element to be styled with calculations that use its
index among its siblings and its total count of siblings (including itself),
respectively.
https://developer.mozilla.org/docs/Web/CSS/Reference/Values/sibling-index
https://developer.mozilla.org/docs/Web/CSS/Reference/Values/sibling-count
Added a time picker user interface to <input type="time"> and <input
type="datetime-local">, making selecting a time more accessible and intuitive.
https://developer.mozilla.org/docs/Web/HTML/Reference/Elements/input/time
https://mzl.la/4g2gbu2
Added support for the No-Vary-Search HTTP response header for the HTTP disk
cache. Servers can now declare which URL query parameters are irrelevant to
the response, allowing Firefox to reuse cached resources across parameter
variations and improving cache hit rates.
https://developer.mozilla.org/docs/Web/HTTP/Reference/Headers/No-Vary-Search
Firefox now supports new Iterator.prototype.chunks and
Iterator.prototype.windows methods that allow consuming an iterator as either
overlapping or non-overlapping subsequences of configurable size.
https://mzl.la/4wZKZS6
https://mzl.la/4g4Xeqx
Firefox now supports Iterator.prototype.includes(), allowing developers to
check whether an iterator contains a given value without first converting it
to an array.
https://mzl.la/4wEgsIp
Firefox now supports the Iterator.prototype.join method, which allows
joining an iterator into a string, similar to Array.prototype.join.
https://mzl.la/4gkqbxE