ToDo: diffs FF103-FF104

[earthlng]

FF104 is scheduled for release Aug. 23rd

FF104 release notes
FF104 for developers
FF104 security advisories

---

76 diffs ( 49 new, 18 gone, 9 different )

new in v104.0:

• pref("privacy.partition.always_partition_third_party_non_cookie_storage", false); 1781818, 1758740 - 3c73bc1
• FYI: the pbmode space is getting interesting
  • pref("dom.caches.hide_in_pbmode.enabled", false);
  • pref("dom.indexedDB.hide_in_pbmode.enabled", false);
  • pref("dom.serviceWorkers.hide_in_pbmode.enabled", true);
• Note top self: RFP
  • pref("svg.embedder-prefers-color-scheme.content.enabled", false); 1779457 + 1764354
• FYI: spec, it will ride the train when ready
  • pref("browser.tabs.remote.coep.credentialless", false);
  • pref("dom.origin-trials.coep-credentialless.state", 0);

removed, renamed or hidden in v104.0:

• pref("network.cookie.lifetimePolicy", 0); - 1759665, 1764761
  • effectively deprecated in FF103 - a808065 - 1681493, 1681495, 1681498

changed in v104.0:

• 0802 pref("browser.fixup.alternate.enabled", false); // prev: true - 1679556 - fda46e8
• 0806 pref("browser.urlbar.dnsResolveSingleWordsAfterSearch", 0); // prev: 1 - 1735534 - 8309cc2
• FYI
  • pref("browser.contentblocking.features.strict", "tp,tpPrivate,cm,fp,stp,lvl2,rp,rpTop,ocsp,qps,qpsPBM");
    • // prev: "tp,tpPrivate,cm,fp,stp,lvl2,rp,rpTop,ocsp,qps"
  • pref("network.cookie.sameSite.schemeful", true); // prev: false - 1750972

ignore

click me for details

==NEW

pref("app.update.background.messaging.targeting.snapshot.intervalSec", 1800);
pref("browser.browser.firefoxView.featureTour", "default, default, true");
pref("browser.newtabpage.activity-stream.showRecentSaves", true);
pref("browser.privacySegmentation.windowSeparation.enabled", false);
pref("browser.privatebrowsing.enable-new-indicator", false);
pref("browser.promo.pin.enabled", true);
pref("browser.sessionstore.collect_session_storage", true);
pref("browser.sessionstore.collect_zoom", true);
pref("browser.sessionstore.platform_collection", true);
pref("browser.snapshots.score.IsUserRemoved", -10);
pref("dom.indexedDB.preprocessing", false);
pref("dom.indexedDB.testing", false);
pref("dom.mouse_event.region.enabled", false);
pref("dom.storage_access.forward_declared.enabled", false);
pref("dom.storage_access.forward_declared.lifetime", 900);
pref("extensions.unifiedExtensions.enabled", false);
pref("gfx.canvas.accelerated.async-present", true);
pref("javascript.options.experimental.shadow_realms", false);
pref("layout.css.animation-composition.enabled", false);
pref("layout.css.backdrop-filter.force-enabled", false);
pref("layout.css.contain-intrinsic-size.enabled", false);
pref("layout.css.font-loading-api.workers.enabled", false);
pref("media.wmf.media-engine.channel-decoder.enabled", false);
pref("media.wmf.media-engine.video-output.enabled", false);
pref("nimbus.validation.enabled", true);
pref("pdfjs.annotationEditorMode", -1);
pref("pdfjs.forcePageColors", false);
pref("privacy.trackingprotection.emailtracking.data_collection.enabled", true);
pref("privacy.trackingprotection.emailtracking.enabled", false);
pref("privacy.trackingprotection.emailtracking.webapp.domains", "mail.163.com,mail.aol.com,fastmail.com,webmail.gandi.net,mail.google.com,navigator-bs.gmx.com,app.hey.com,horde.org/apps/webmail,hushmail.com,icloud.com/mail,kolabnow.com,laposte.net/accueil,mail.lycos.com,mail.com/mail/,mail.ru,mailfence.com,outlook.live.com,email-postaci.com/,posteo.de,mail.protonmail.com,app.rackspace.com,mail.rediff.com,emailmg.ipage.com,runbox.com,mail.sina.com.cn,tutanota.com,mail.yahoo.com,mail.yandex.com,mail.zimbra.com,zoho.com/mail/");
pref("services.sync.prefs.sync-seen.browser.newtabpage.activity-stream.section.highlights", false);
pref("services.sync.prefs.sync-seen.browser.newtabpage.activity-stream.section.highlights.includePocket", false);
pref("services.sync.prefs.sync-seen.general.autoScroll", false);
pref("services.sync.prefs.sync-seen.media.eme.enabled", false);
pref("urlclassifier.features.emailtracking.allowlistTables", "mozstd-trackwhite-digest256");
pref("urlclassifier.features.emailtracking.blocklistTables", "base-email-track-digest256");
pref("urlclassifier.features.emailtracking.datacollection.allowlistTables", "mozstd-trackwhite-digest256");
pref("urlclassifier.features.emailtracking.datacollection.blocklistTables", "base-email-track-digest256,content-email-track-digest256");
pref("webgl.out-of-process.async-present", false);
pref("webgl.out-of-process.async-present.force-sync", true);
pref("webgl.use-canvas-render-thread", true);
pref("widget.non-native-theme.solid-outline-style", false);

==REMOVED, RENAMED or HIDDEN

pref("apz.minimap.enabled", false);
pref("browser.newtabpage.activity-stream.discoverystream.engagementLabelEnabled", false);
pref("browser.newtabpage.activity-stream.discoverystream.lastCardMessage.enabled", false);
pref("browser.newtabpage.activity-stream.discoverystream.loadMore.enabled", false);
pref("browser.snapshots.score.IsUsedRemoved", -10);
pref("canvas.hitregions.enabled", false);
pref("dom.indexedDB.storageOption.enabled", false);
pref("fission.enforceBlocklistedPrefsInSubprocesses.tmp", false);
pref("fission.omitBlocklistedPrefsInSubprocesses.tmp", false);
pref("javascript.options.experimental.array_find_last", false);
pref("javascript.options.wasm_simd", true);
pref("layers.low-precision-buffer", false);
pref("layers.low-precision-resolution", "0.25");
pref("layout.css.outline-style-auto.enabled", true);
pref("pdfjs.annotationEditorEnabled", false);
pref("security.insecure_field_warning.contextual.enabled", true);
pref("services.sync.prefs.sync.network.cookie.lifetimePolicy", true);

==CHANGED

pref("browser.newtabpage.activity-stream.asrouter.providers.messaging-experiments", "{\"id\":\"messaging-experiments\",\"enabled\":true,\"type\":\"remote-experiments\",\"updateCycleInMs\":3600000}"); // prev: "{\"id\":\"messaging-experiments\",\"enabled\":true,\"type\":\"remote-experiments\",\"messageGroups\":[\"cfr\",\"aboutwelcome\",\"infobar\",\"spotlight\",\"moments-page\",\"pbNewtab\"],\"updateCycleInMs\":3600000}"
pref("browser.safebrowsing.provider.mozilla.lists", "base-track-digest256,mozstd-trackwhite-digest256,google-trackwhite-digest256,content-track-digest256,mozplugin-block-digest256,mozplugin2-block-digest256,ads-track-digest256,social-track-digest256,analytics-track-digest256,base-fingerprinting-track-digest256,content-fingerprinting-track-digest256,base-cryptomining-track-digest256,content-cryptomining-track-digest256,fanboyannoyance-ads-digest256,fanboysocial-ads-digest256,easylist-ads-digest256,easyprivacy-ads-digest256,adguard-ads-digest256,social-tracking-protection-digest256,social-tracking-protection-facebook-digest256,social-tracking-protection-linkedin-digest256,social-tracking-protection-twitter-digest256,base-email-track-digest256,content-email-track-digest256"); // prev: "base-track-digest256,mozstd-trackwhite-digest256,google-trackwhite-digest256,content-track-digest256,mozplugin-block-digest256,mozplugin2-block-digest256,ads-track-digest256,social-track-digest256,analytics-track-digest256,base-fingerprinting-track-digest256,content-fingerprinting-track-digest256,base-cryptomining-track-digest256,content-cryptomining-track-digest256,fanboyannoyance-ads-digest256,fanboysocial-ads-digest256,easylist-ads-digest256,easyprivacy-ads-digest256,adguard-ads-digest256,social-tracking-protection-digest256,social-tracking-protection-facebook-digest256,social-tracking-protection-linkedin-digest256,social-tracking-protection-twitter-digest256"
pref("devtools.responsive.showUserAgentInput", true); // prev: false
pref("dom.fullscreen.modal", true); // prev: false
pref("urlclassifier.disallow_completions", "goog-downloadwhite-digest256,base-track-digest256,mozstd-trackwhite-digest256,content-track-digest256,mozplugin-block-digest256,mozplugin2-block-digest256,goog-passwordwhite-proto,ads-track-digest256,social-track-digest256,analytics-track-digest256,base-fingerprinting-track-digest256,content-fingerprinting-track-digest256,base-cryptomining-track-digest256,content-cryptomining-track-digest256,fanboyannoyance-ads-digest256,fanboysocial-ads-digest256,easylist-ads-digest256,easyprivacy-ads-digest256,adguard-ads-digest256,social-tracking-protection-digest256,social-tracking-protection-facebook-digest256,social-tracking-protection-linkedin-digest256,social-tracking-protection-twitter-digest256,base-email-track-digest256,content-email-track-digest256"); // prev: "goog-downloadwhite-digest256,base-track-digest256,mozstd-trackwhite-digest256,content-track-digest256,mozplugin-block-digest256,mozplugin2-block-digest256,goog-passwordwhite-proto,ads-track-digest256,social-track-digest256,analytics-track-digest256,base-fingerprinting-track-digest256,content-fingerprinting-track-digest256,base-cryptomining-track-digest256,content-cryptomining-track-digest256,fanboyannoyance-ads-digest256,fanboysocial-ads-digest256,easylist-ads-digest256,easyprivacy-ads-digest256,adguard-ads-digest256,social-tracking-protection-digest256,social-tracking-protection-facebook-digest256,social-tracking-protection-linkedin-digest256,social-tracking-protection-twitter-digest256"

[earthlng]

some bugzilla tickets

• app.update.background.messaging.targeting.snapshot.intervalSec
  Bug 1775138 - Part 1: Snapshot Firefox Messaging System targeting configuration periodically.

• apz.minimap.enabled
  Bug 1771822 - Remove the apz.minimap.enabled pref.

• browser.browser.firefoxView.featureTour
  Bug 1779024 - Create Feature Callout message surface using aboutwelcome
  Bug 1779420 - Add string pref to capture user progress in about:firefoxview feature tour

• browser.contentblocking.features.strict
  Bug 1778457 - Enable query parameter stripping in Private Browsing Mode if ETP strict is enabled.
  Bug 1776760 - Enable dFPI by default for Beta and Release via cookieBehavior pref.
  Bug 1763660 - Add query parameter stripping pref to ETP strict.
  Bug 1734328 - Part 4: Add disallow relaxing referrer policies for top navigation to the ETP strict list.

• browser.fixup.alternate.enabled
  Bug 1679556 - Toggle browser.fixup.alternate.enabled and add telemetry,

• browser.newtabpage.activity-stream.asrouter.providers.messaging-experiments
  Bug 1771073 - Correct FxMS features and keep them up to date with tests
  Bug 1746598 - Route MS messages to PB newtab
  Bug 1740718 - Switch Messaging System to use the NimbusFeatures API
  Bug 1734146 - Reach groups should include all features that are part of the messaging-experiments provider

• browser.newtabpage.activity-stream.discoverystream.lastCardMessage.enabled
  Bug 1777539 - Pocket newtab remove load more button and last card features
  Bug 1729946 - Adding Pocket newtab load more button.

• browser.newtabpage.activity-stream.discoverystream.loadMore.enabled
  Bug 1777539 - Pocket newtab remove load more button and last card features
  Bug 1729946 - Adding Pocket newtab load more button.

• browser.privacySegmentation.windowSeparation.enabled
  Bug 1778182: put private browsing taskbar pinning & window separation behind a distinct pref

• browser.privatebrowsing.enable-new-indicator
  Bug 1773715 - Add a new private browsing indicator with label.

• browser.promo.pin.enabled
  Bug 1780429 - Display Pin Private Browsing Promo based off Pref
  Bug 1780429 - Display Pin Private Browsing Promo based off Pref
  Bug 1779858 - Update ShouldShowPromo to handle PIN promotype

• browser.safebrowsing.provider.mozilla.lists
  Bug 1773691 - Add email tracking prtoection and annotation to the safebrowsing module.

• browser.sessionstore.collect_session_storage
  Bug 1734394 - Make Geckoview use the session store collector

• browser.sessionstore.collect_zoom
  Bug 1734394 - Make Geckoview use the session store collector

• browser.sessionstore.platform_collection
  Bug 1780137 - Make browser.sessionstore.platform_collection false for Thunderbird.
  Bug 1734394 - Make Geckoview use the session store collector

• browser.snapshots.score.IsUsedRemoved
  Bug 1778663: Correct isUsedRemoved typo in snapshot scorer.
  Bug 1741868 - Add a scorer for scoring snapshots based on a relevancy score.

• browser.snapshots.score.IsUserRemoved
  Bug 1778663: Correct isUsedRemoved typo in snapshot scorer.

• browser.tabs.remote.coep.credentialless
  Bug 1731778 - Implement COEP: credentialless

• browser.urlbar.dnsResolveSingleWordsAfterSearch
  Bug 1735534 - Set browser.urlbar.dnsResolveSingleWordsAfterSearch to 0 by default -

• canvas.hitregions.enabled
  Bug 1780385 - Remove canvas hit region api.

• devtools.responsive.showUserAgentInput
  Bug 1772847 - [devtools] Enable devtools.responsive.showUserAgentInput on all channels

• dom.caches.hide_in_pbmode.enabled
  Bug 1776109 - Part 3: Hide caches/indexedDB/serviceWorker in PBMode

• dom.fullscreen.modal
  Bug 1771150 - Make fullscreen modal.

• dom.indexedDB.hide_in_pbmode.enabled
  Bug 1776109 - Part 3: Hide caches/indexedDB/serviceWorker in PBMode

• dom.indexedDB.preprocessing
  Bug 1779000 - Part 2: Replace use of AtomicBoolPrefChangedCallback with StaticPrefs

• dom.indexedDB.storageOption.enabled
  Bug 1354500 - Part 2: Remove IDBDatabase#storage

• dom.indexedDB.testing
  Bug 1779000 - Part 2: Replace use of AtomicBoolPrefChangedCallback with StaticPrefs

• dom.mouse_event.region.enabled
  Bug 1780385 - Remove canvas hit region api.

• dom.origin-trials.coep-credentialless.state
  Bug 1778492 - Add an origin trial for coep: credentialless

• dom.serviceWorkers.hide_in_pbmode.enabled
  Bug 1776109 - Part 3: Hide caches/indexedDB/serviceWorker in PBMode

• dom.storage_access.forward_declared.enabled
  Bug 1774854, part 1 - Create new preferences and document member functions for the forward-declared SAAPI,

• dom.storage_access.forward_declared.lifetime
  Bug 1774854, part 1 - Create new preferences and document member functions for the forward-declared SAAPI,

• extensions.unifiedExtensions.enabled
  Bug 1777481 - Introduce a new extension button on the toolbar.

• fission.enforceBlocklistedPrefsInSubprocesses.tmp
  Bug 1778505: Remove the temporary pref sanitization prefs
  Bug 1772599 - Use a temporary pref for a few weeks while we vette the behavior

• fission.omitBlocklistedPrefsInSubprocesses.tmp
  Bug 1778505: Remove the temporary pref sanitization prefs
  Bug 1772599 - Use a temporary pref for a few weeks while we vette the behavior

• gfx.canvas.accelerated.async-present
  Bug 1777426 - Add gfx.canvas.accelerated.async-present for toggling async present with Canvas2D independent of WebGL.

• javascript.options.experimental.array_find_last
  Bug 1775026 - Ship Array.{findLast,findLastIndex};

• javascript.options.experimental.shadow_realms
  Bug 1772552 - Enable BFCache for pages with beforeunload event listeners on Desktop on EARLY_BETA_OR_EARLIER
  Bug 1747059 - Gecko support for ShadowRealms

• javascript.options.wasm_simd
  Bug 1762409 - Remove wormhole instructions.
  Bug 1753923 - Remove run-time selection of wasm SIMD.

• layers.low-precision-buffer
  Bug 1771822 - Remove the layers.low-precision-{buffer,resolution} prefs.

• layers.low-precision-resolution
  Bug 1771822 - Remove the layers.low-precision-{buffer,resolution} prefs.

• layout.css.animation-composition.enabled
  Bug 1785329 - Enable animation-composition on Nightly.
  Bug 1293490 - Part 1: Implement CSS animation-composition longhand in style system.

• layout.css.backdrop-filter.force-enabled
  Bug 1785366 - Blocklist backdrop filter on some Ivy/Sandybridge Intel Windows drivers.

• layout.css.contain-intrinsic-size.enabled
  Bug 1778062 - Add support for parsing the contain-intrinsic-size property from the CSS-sizing specification.

• layout.css.font-loading-api.workers.enabled
  Bug 1779009 - Ship OffscreenCanvas to release.
  Bug 1779835 - Ship OffscreenCanvas to early beta and earlier.
  Bug 1746110 - Enable OffscreenCanvas by default on nightly.
  Bug 1072107 - Part 9. Expose FontFaceSet on workers.

• layout.css.outline-style-auto.enabled
  Bug 1780075 - Remove outline-style: auto pref.

• media.wmf.media-engine.channel-decoder.enabled
  Bug 1758789 - part12 : use the media engine for channel decoder for testing.

• media.wmf.media-engine.video-output.enabled
  Bug 1758789 - part9 : add a pref to control video output.

• network.cookie.lifetimePolicy
  Bug 1759665 - Remove usage of StaticPref::network.cookie.lifetimePolicy.r=necko-reviewers,pbz,janv,dragana,timhuang,asuth
  Bug 1764761 - Remove/replace the network.cookie.lifetimePolicy.

• network.cookie.sameSite.schemeful
  Bug 1750972 - Enable same-site schemeful by default.
  Bug 1750972 - Enable same-site schemeful and noneRequiresSecure by default.

• nimbus.validation.enabled
  Bug 1780088 - Disable experiment schema validation with a pref

• pdfjs.annotationEditorMode
  Bug 1785810 - Enabled PDF in nightly and early beta
  Bug 1784272 - Enable editing in the PDF viewer
  Bug 1779389 - Enable editing in the PDF viewer on EARLY_BETA_OR_EARLIER

• privacy.partition.always_partition_third_party_non_cookie_storage
  Bug 1781818 - Allow unpartitioning of SessionStorage,
  Bug 1758740 - Create a preference for always partitioning third party non-cookie web storage, privacy.partition.always_partition_third_party_non_cookie_storage;

• privacy.trackingprotection.emailtracking.data_collection.enabled
  Bug 1773701 - Part 2: Implement the email tracking data collection feature.

• privacy.trackingprotection.emailtracking.enabled
  Bug 1773695 - Part 1: Add prefs for email tracking protection.

• privacy.trackingprotection.emailtracking.webapp.domains
  Bug 1773701 - Part 3: Add email tracking telemetry probes.

• security.insecure_field_warning.contextual.enabled
  Bug 1773047 - Remove the security.insecure_field_warning.contextual.enabled pref

• services.sync.prefs.sync.network.cookie.lifetimePolicy
  Bug 1764761 - Remove/replace the network.cookie.lifetimePolicy.

• services.sync.prefs.sync-seen.browser.newtabpage.activity-stream.section.highlights
  Bug 1731249 - add an allow-list of prefs that will sync even if the default value.

• services.sync.prefs.sync-seen.browser.newtabpage.activity-stream.section.highlights.includePocket
  Bug 1731249 - add an allow-list of prefs that will sync even if the default value.

• services.sync.prefs.sync-seen.general.autoScroll
  Bug 1731249 - add an allow-list of prefs that will sync even if the default value.

• services.sync.prefs.sync-seen.media.eme.enabled
  Bug 1731249 - add an allow-list of prefs that will sync even if the default value.

• svg.embedder-prefers-color-scheme.content.enabled
  Bug 1779457 - Turn this off on beta for now. a=dsmith
  Bug 1779457 - Make prefers-color-scheme of SVG images match embedder on content too.

• urlclassifier.disallow_completions
  Bug 1773691 - Add email tracking prtoection and annotation to the safebrowsing module.

• urlclassifier.features.emailtracking.allowlistTables
  Bug 1773691 - Add email tracking prtoection and annotation to the safebrowsing module.

• urlclassifier.features.emailtracking.blocklistTables
  Bug 1773691 - Add email tracking prtoection and annotation to the safebrowsing module.

• urlclassifier.features.emailtracking.datacollection.allowlistTables
  Bug 1773701 - Part 1: Add email tracking data collection feature to SafeBrowsing.jsm.

• urlclassifier.features.emailtracking.datacollection.blocklistTables
  Bug 1773701 - Part 1: Add email tracking data collection feature to SafeBrowsing.jsm.

• webgl.out-of-process.async-present
  Bug 1777426 - Add pref to force async present to sync anyway so we can use remote textures.
  Bug 1712486 - Add async front buffer posting for out-of-process WebGL

• webgl.out-of-process.async-present.force-sync
  Bug 1777426 - Add pref to force async present to sync anyway so we can use remote textures.

• webgl.use-canvas-render-thread
  Bug 1782722 - Make WebGL override unmasked renderer/vendor pref accesses thread safe.
  Bug 1778431 - Allocate canvas render thread for out-of-process WebGL

• widget.non-native-theme.solid-outline-style
  Bug 1776592 - Make auto outline draw two differently-colored strokes instead of one.

[fxbrit]

• browser.privacySegmentation.windowSeparation.enabled -> this reddit post has a visual representation of the behavior and it lead to a discussion in 1779798.
• dom.origin-trials.coep-credentialless.state -> specs sound interesting, it's enabled in my nightly.
• privacy.partition.always_partition_third_party_non_cookie_storage -> what's APS?

[Thorin-Oakenpants]

I haven't had time to go thru the remainder, but if that's all it is, then fuck it, not a privacy issue. My nightly added a nightly PB mode shortcut to programs list, IDK when and which I don't use ( i.e is windows start button > all programs), and I don't use PB mode, so never noticed anything on the task bar

so cool, another one to ignore

FYI: https://bugzilla.mozilla.org/show_bug.cgi?id=1751481 - I've been ignoring these segmentation tickets for months since we don't use PB mode

[Jee-Hex]

My nightly added a nightly PB mode shortcut to programs list, IDK when and which I don't use ( i.e is windows start button > all programs), and I don't use PB mode, so never noticed anything on the task bar

probably something to do with private_browsing.exe (bug 1761291).

[Thorin-Oakenpants]

interesting

• pref("dom.storage_access.forward_declared.enabled", false);
• pref("dom.storage_access.forward_declared.lifetime", 900); // 15 mins I assume

see 1774854 and https://github.com/privacycg/storage-access/issues/83

[Thorin-Oakenpants]

what's APS?

Always Partitioning Storage - see https://phabricator.services.mozilla.com/D144731

[opusforlife2]

Always Partitioning Storage - see https://phabricator.services.mozilla.com/D144731

That's an extremely info-dense webpage. But nowhere did I find an explanation for what APS actually is.

[remyabel2]

Always Partitioning Storage - see https://phabricator.services.mozilla.com/D144731

That's an extremely info-dense webpage. But nowhere did I find an explanation for what APS actually is.

# Always partition web storage APIs except cookies.