Firefox Next - ciekawe zmiany

[dexter]

Niby planują już w 2023 porzucić Windows 7-8.1.

Chciałem tylko potwierdzić, że nadchodzi decyzja dotycząca planu porzucenia Win 7, która zostanie podana do wiadomości, ale można spokojnie założyć, że nie zakończymy wsparcia dla Win7 przed ESR 115.

ESR 115 pojawi się w lipcu i będzie dostawać poprawki bezpieczeństwa przez rok.

[dexter]

Spidermonkey Performance
We're working on improving performance for popular web frameworks such as React. We can't list all of these improvements here, but the list below covers some of this work.

• We added an optimization for property accesses inside a for-in loop. This lets us avoid slower megamorphic property lookups in React and other frameworks.
• We optimized megamorphic property gets/sets more.
• We optimized atomization more to avoid flattening ropes in certain cases.
• We landed more improvements for our GC's parallel marking implementation. We're currently performing some experiments to evaluate its performance.
• We fixed some performance issues with the ARM64 fast paths for truncating doubles.
• We added some fast paths for objects/arrays to structured clone reading.
• We added support for optimizing more relational comparison types with CacheIR.

[dexter]

Clipboard writeText API was shipped to security context in Firefox 63, but the readText API is only exposed to web extensions

and read/write APIs are put behind `dom.events.asyncClipboard.clipboardItem` pref, which is disabled by default.

We are currently working on making read and readText APIs shippable to web pages by improving the security model.
This will show a context menu item to get user confirmation whenever the page tries to read the system clipboard programmatically
and the clipboard data isn’t from the same origin document.

For the write API, we are currently working on making the ClipboardItem constructor take a promise, which is resolved with
the actual write data, as the data type. And the write API also supports non-text type, i.e. image/png, now.


Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1619251

Specification: https://w3c.github.io/clipboard-apis/#a ... pboard-api


Preference: `dom.events.asyncClipboard.readText` for readText()
`dom.events.asyncClipboard.clipboardItem` for read()/write()

[dexter]

What is Cookie Banners Handling?

Firefox now clears these annoying cookie banners on your behalf. We’ll always hit “Reject all” if we have that option though in absence of a “Reject all” we’ll do what you’d do otherwise and hit “Accept all”

Cookie banner handling works with a list of domains. Only domains on that list will get automated handling regarding their cookie banners. The domains covered are on [this list]*↓ that was built as a mix of top sites for Poland on Firefox. We intend to grow the list as time grows and welcome feedback on unsupported sites that should be added to the list.

Firefox Nightly desktop, Firefox Nightly Android

• Go to about:config in the URL bar
• Ensure that the following preferences are set correctly:
  
  1. cookiebanners.service.mode set to 2
  2. cookiebanners.service.mode.privateBrowsing set to 2
• Browse to the URLs from that list and watch out for the following:
• Notice any odd UX on the site that could relate to the cookie banner handling?
• Notice site breakage?
• Notice slowness?
• Notice cookie banners that are not being cleared?

If you have general product feedback and suggestions, please add them through this form.

*) businessinsider.com.pl, fakt.pl, filmweb.pl, flashscore.pl, gazeta.pl, google.pl, interia.pl, meczyki.pl, mediaexpert.pl, medonet.pl, onet.pl, otomoto.pl, plejada.pl, pomponik.pl, sport.pl, tvn24.pl, tvp.pl, wyborcza.pl

[dexter]

W Fx114 poprawiono chyba rekordowo starego buga - 24 lata

Buga zgłoszono 5 lat przed wydaniem wersji 1.0

Bug 13093 - Don't change cursor or do mouseovers during selection

[dexter]

Fx117 Firefox users get a native translation option soon

[dexter]

Fx114:

The patch in bug 1823634 seems to:

• significantly reduce out-of-process CPU usage resulting from Microsoft Defender (by ~50%), allowing Defender to now score among the lowest CPU usage impacts when using Firefox;
• reduce CPU usage resulting from ESET and Trend Micro (by ~17% for both);
• have no significant impact on CPU usage from Avast, Norton, McAfee.

On an older laptop machine with a i5-6200U CPU, averaged Speedometer results improved from 81.1 to 82.9 (~2.2% improvement). MsMpEng.exe CPU usage drops by ~47%. MsMpEng.exe is no longer the next top-consuming process after firefox.exe during a Speedometer run! These results were obtained with mpengine.dll version 1.1.20200.4, in other words these numbers show additional, new, cumulative improvements over what was previously described in bug 1441918 comment 91. So on this machine, there should currently be ~87% less CPU usage from MsMpEng.exe compared to before the investigation in bug 1441918 if using Firefox Nightly.

[dexter]

Nowa strona about:translations w Nightly.

[krystian3w]

Widzę już działa RC1 dla Windows 10:

https://archive.mozilla.org/pub/firefox ... /win64/pl/

Zobaczymy czy przeskoczy ono na ESR jak będzie wydanie "115.1.0" w Windows 7 z premierą Firefox 116.
_______________________________________________________________________________________________________________________________________________________________________________________________________________________

Z lip w tym wypadku będzie uruchomienie globalnie naprawionego :has() z CSS4 od wydania 116 co może zepsuć strony, które przeniosą część JS na CSS4 (wersja eksperymentalna jak w 115 nie jest dopieszczona to jest dalej zbyt zbugowana).

[dexter]

Fx116: [Bug 1833416] Change keyboard shortcut to act as a general 'undo' for last closed tab, window or session

[krystian3w]

Na poziomie about:support nie widzę przeskoku na gałąź ESR, w planach mają to wymusić w sierpniu dopiero?

[dexter]

Myślę, że na Windows 7 przeskok będzie dopiero w sierpniu, na razie jest standardowa wersja 115.

[dexter]

We were able to disable some Spectre / Meltdown JIT mitigations! Nightly-only for now.

• These were mitigations we deployed years ago to protect users against various timing attacks. With Fission shipped, and ORB enabled on Nightly
• This improves performance for JS-heavy workloads: at least 6% on JetStream 2 and 2-3% for a number of the TodoMVC sub tests in Speedometer 3.

[dexter]

As part of the Browser Migration Wizard, we implemented a mechanism to import extensions from other browsers (currently, only Ch* is supported) - Bug 1838431, Bug 1838464, Bug 1838465, Bug 1839830, Bug 1840352

[krystian3w]

Podobno naprawa drugi raz mechanizmu blokady bibliotek zabija wydajność: https://forum.dobreprogramy.pl/t/najnowszy-firefox-115-0-1-zacinanie-na-wielu-stronach/660893/

Chyba, że changelog nie uwzględnia wszystkiego co załapało się na pierwszy hotfix (czyli tylko osoby co ogarniają ostatnie commity mogłyby wskazać sprawcę).

[dexter]

Hmmm podejrzana sprawa. A on ma Kingsofta? Dobrze że kazałeś zgłosić to na bugzillę.

[krystian3w]

Wątpię, że ma – raczej leci na MS Defenderze z 10/11.

[dexter]

Wygląda na to, że zniwelowaliśmy różnicę w benchmarku Speedometer w porównaniu do Chrome.

speedometer1.png

[krystian3w]

I być może 4-5 tyg. cykl już na zawsze da wyższy numerek Firefox. Ich 115 jest planowana dopieroż na jutro https://chromiumdash.appspot.com/schedule.

[dexter]

Jako że kilka dni temu rozwiązany został bug 1790255, do PDF-ów można dodawać obrazki.

pdf-17.png