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Diffs Firefox 154.0-155.0
✅ New keys in 155.0
browser.aboutaddons.novaThemesPickerEnabled:truebrowser.alerts.capture.enabled:truebrowser.ctrlTab.maxPreviews:7browser.ipProtection.features.siteInclusions:falsebrowser.ml.onnxNativeAvailabilityReported:falsebrowser.netError.searchCTA.enabled:falsebrowser.newtabpage.activity-stream.discoverystream.sections.adAllowedRanks:browser.newtabpage.activity-stream.discoverystream.sections.ordering:browser.newtabpage.activity-stream.showWebNotifications:truebrowser.newtabpage.activity-stream.system.showWebNotifications:falsebrowser.newtabpage.activity-stream.widgets.clocks.interaction:falsebrowser.newtabpage.activity-stream.widgets.privacy.blankChance:0.4browser.newtabpage.activity-stream.widgets.privacy.celebrationState:{}browser.newtabpage.activity-stream.widgets.privacy.celebrationThreshold:10browser.newtabpage.activity-stream.widgets.privacy.forceCelebration:browser.newtabpage.activity-stream.widgets.privacy.forceMessageId:browser.newtabpage.activity-stream.widgets.privacy.maxDisplayCount:999browser.newtabpage.activity-stream.widgets.privacy.messageState:{}browser.newtabpage.activity-stream.widgets.privacy.showVpnMessages:falsebrowser.newtabpage.activity-stream.widgets.stocks.interaction:falsebrowser.pageextractor.youtube.enabled:falsebrowser.pageextractor.youtube.timeoutMs:3000browser.referrals.pingSubmitted:falsebrowser.smartwindow.agent.enabled:truebrowser.smartwindow.agent.supportedRegions:US,CAbrowser.smartwindow.autoTabGrouping.preloadModels:truebrowser.smartwindow.searchTheWebFast:truebrowser.smartwindow.smartformfill.disallowedRegions:FRbrowser.smartwindow.smartformfill.enabled:falsebrowser.tabs.groups.onboardingCallouts.enabled:falsebrowser.urlbar.share-button.enabled:falsebrowser.urlbar.trackerCount.enabled:truebrowser.urlbar.trackerCount.featureGate:falsebrowser.urlbar.trimWww:falsedom.editcontext.suppress_notifying_ime_timeout:300dom.editcontext.suppress_notifying_ime_timeout_focus:100dom.ipc.validatePrincipal.validateSiteLoaded:truedom.performance.deliverytype.enabled:falsedom.speculation_rules.max_body_bytes:5242880dom.speculation_rules.max_records_per_document:20dom.speculation_rules.record_expiry_ms:300000dom.speculation_rules.same_origin_only:truedom.speculation_rules.wait_timeout_ms:2000extensions.formautofill.passports.enabled:falseextensions.formautofill.passports.supported:offgfx.webrender.debug.color-target-init:falsegfx.webrender.render-backend-thread-count:2gfx.webrender.shared-instance-buffer:truegfx.webrender.trim-paused-renderers.mode:2javascript.options.experimental.promise_allkeyed:truelayout.css.calc-typed-arithmetic.enabled:falselayout.css.display-animations.enabled:falselayout.css.fake-webkit-scrollbar.enabled-domains:mail.google.com,docs.google.com,play.google.com,polymarket.com,www.beterbed.nl,www.shazam.com,www.tiktok.comlayout.css.supports.at-rule.enabled:falsemathml.a.element.enabled:falsemedia.use-remote-encoder.audio.software:falsemedia.use-remote-encoder.video.platform:falsemedia.use-remote-encoder.video.software:falsemedia.videocontrols.picture-in-picture.playback-speed.enabled:falsenetwork.protocol-handler.prompt-without-user-activation:truepdfjs.enableNova:truepdfjs.featuresNotificationDismissed:falseplaces.semanticHistory.multilingualEmbeddingRegions:[["FR",["en-*","fr-*"]],["*",["fr-*"]]]privacy.containers.switchDuringNavigation.enabled:falseremote.experimental.dynamicstart.enabled:falseremote.screenshot.use_readback:falsesecurity.allow_unsafe_subscript_loads:falsesidebar.openTabsPanel.hoverPreview.enabled:truesidebar.openTabsPanel.sortOption:tabStripOrdersignon.storage.rust.restoreAttempts:0signon.storage.rust.restoreDone:falsesignon.storage.rust.restoreEnabled:true❌ Removed keys in 155.0
accessibility.ARIAElementReflection.enabledapz.rounded_external_scroll_offsetbrowser.newtabpage.activity-stream.discoverystream.sections.layoutbrowser.newtabpage.activity-stream.discoverystream.thumbsUpDown.locale-thumbs-configbrowser.newtabpage.activity-stream.discoverystream.thumbsUpDown.region-thumbs-configbrowser.newtabpage.activity-stream.discoverystream.thumbsUpDown.searchTopsitesCompactbrowser.newtabpage.activity-stream.logo.variationbrowser.promo.cookiebanners.enabledbrowser.promo.focus.disallowed_regionsbrowser.promo.focus.enabledbrowser.referrals.codebrowser.translation.neverForLanguagesbrowser.urlbar.deduplication.thresholdDayscookiebanners.bannerClicking.enabledcookiebanners.bannerClicking.logLevelcookiebanners.bannerClicking.maxTriesPerSiteAndSessioncookiebanners.bannerClicking.pollingIntervalcookiebanners.bannerClicking.testingcookiebanners.bannerClicking.timeoutAfterDOMContentLoadedcookiebanners.bannerClicking.timeoutAfterLoadcookiebanners.cookieInjector.defaultExpiryRelativecookiebanners.cookieInjector.enabledcookiebanners.listService.logLevelcookiebanners.listService.testRulescookiebanners.listService.testSkipRemoteSettingscookiebanners.service.detectOnlycookiebanners.service.enableGlobalRulescookiebanners.service.enableGlobalRules.subFramescookiebanners.service.modecookiebanners.service.mode.privateBrowsingcookiebanners.ui.desktop.showCalloutdevtools.debugger.file-search-case-sensitivedevtools.debugger.file-search-regex-matchdevtools.debugger.file-search-whole-worddom.origin-trials.private-attribution.statedom.private-attribution.submission.enableddom.security.credentialmanagement.chooser.testing.enableddom.vr.controller.enumerate.intervalgfx.font_rendering.colr_v1.enabledjavascript.options.experimental.explicit_resource_managementlayout.css.anchor-positioning.enabledlayout.css.fake-webkit-scrollbar.disabled-domainslayout.css.font-palette.enabledlayout.css.font-tech.enabledlayout.css.font-variant-emoji.enabledlayout.css.font-variations.enabledmedia.benchmark.framesmedia.benchmark.timeoutmedia.benchmark.vp9.fpsmedia.benchmark.vp9.thresholdmedia.benchmark.vp9.versioncheckmedia.use-remote-encoder.audiomedia.use-remote-encoder.videosidebar.revamp.round-content-areasvg.SVGAElement.text.enabledtoolkit.telemetry.dap_enabledtoolkit.telemetry.dap_task1_enabledtoolkit.telemetry.dap_task1_taskidtoolkit.telemetry.dap_visit_counting_enabledtoolkit.telemetry.dap_visit_counting_experiment_listui.new-webcompat-reporter.send-more-info-link🔁 Changed values in 155.0
browser.newtabpage.activity-stream.feeds.webnotificationsfeed:false→truebrowser.smartwindow.endpoint:https://mlpa-prod-prod-mozilla.global.ssl.fastly.net/v1→https://mlpa-prod-prod-mozilla.freetls.fastly.net/v1browser.smartwindow.firstrun.explainerURL:https://www.firefox.com/en-US/smart-window/?v=product→https://www.firefox.com/smart-window/?v=productbrowser.smartwindow.mistralRelease:false→truebrowser.smartwindow.searchQuery.endpointURL:https://mlpa-prod-prod-mozilla.global.ssl.fastly.net/v1/search→https://mlpa-prod-prod-mozilla.freetls.fastly.net/v1/searchbrowser.smartwindow.worldcup.enabled:true→falsebrowser.tabs.groups.smart.agglomerativeThresholdInt:825→650captivedetect.canonicalContent:<meta http-equiv="refresh" content="0;url=https://support.mozilla.org/kb/captive-portal"/>→captivedetect.canonicalURL:http://detectportal.firefox.com/canonical.html→http://firefox-portal-detection.com/generate_204extensions.formautofill.addresses.supported:on→detectjavascript.options.wasm_compact_imports:false→truejavascript.options.wasm_wide_arithmetic:false→truelayout.css.alpha-color-function.enabled:false→truelayout.css.attr.enabled:false→truelayout.css.progress-function.enabled:false→truenetwork.connectivity-service.IPv4.url:http://detectportal.firefox.com/success.txt?ipv4→http://firefox-portal-detection.com/success.txt?ipv4network.connectivity-service.IPv6.url:http://detectportal.firefox.com/success.txt?ipv6→http://firefox-portal-detection.com/success.txt?ipv6network.http.dictionaries.enable:true→falsenetwork.http.happy_eyeballs_enabled:false→truenetwork.http.http3.max_gso_segments:10→64network.http.http3.version_negotiation.enabled:false→truenetwork.lna.block_insecure_contexts:true→falseplaces.semanticHistory.embeddingType:static→places.semanticHistory.supportedRegions:[["AU",["en-*"]],["CA",["en-*"]],["GB",["en-*"]],["IE",["en-*"]],["NZ",["en-*"]],["PH",["en-*"]],["US",["en-*"]]]→[["AU",["en-*"]],["CA",["en-*"]],["GB",["en-*"]],["IE",["en-*"]],["NZ",["en-*"]],["PH",["en-*"]],["US",["en-*"]],["FR",["en-*","fr-*"]]]signon.storage.rust.enabled:true→falsesvg.Moz2D.strokeBounds.enabled:false→truesvg.new-getBBox.enabled:false→trueAll reactions