ToDo: diffs FF138-FF139 #1968
Description
FF139 release date: May 27th 2025
FF139 release notes
FF139 for developers
FF139 security advisories
89 diffs ( 48 new, 27 gone, 14 different )
new in v139.0:
- pref("privacy.antitracking.isolateContentScriptResources", false); - f217122 & 11e3a23
- FYI:
- pref("extensions.dataCollectionPermissions.enabled", false); - see goggle doc
will deal with these three in a later update: they're not important for arkenfox v140, and users shouldn't be fiddling with them
pref("privacy.baselineFingerprintingProtection", true);
pref("privacy.baselineFingerprintingProtection.granularOverrides", "");
pref("privacy.baselineFingerprintingProtection.overrides", "");changed in v139.0:
-
FYI:
was: "tp,tpPrivate,cookieBehavior5,cookieBehaviorPBM5,cryptoTP,fp,stp,emailTP,emailTPPrivate,-consentmanagerSkip,-consentmanagerSkipPrivate,lvl2,rp,rpTop,ocsp,qps,qpsPBM,fpp,fppPrivate,btp"); now: "tp,tpPrivate,cookieBehavior5,cookieBehaviorPBM5,cm,fp,stp,emailTP,emailTPPrivate,lvl2,rp,rpTop,ocsp,qps,qpsPBM,fpp,fppPrivate,btp" diff: removed `cryptoTP,-consentmanagerSkip,-consentmanagerSkipPrivate` diff: added `cm`
ignore
click me for details
==NEW
pref("browser.ml.linkPreview.noKeyPointsRegions", "AD,AT,BE,BG,CH,CY,CZ,DE,DK,EE,ES,FI,FR,GR,HR,HU,IE,IS,IT,LI,LT,LU,LV,MT,NL,NO,PL,PT,RO,SE,SI,SK");
pref("browser.newtabpage.activity-stream.discoverystream.reportAds.enabled", false);
pref("browser.newtabpage.activity-stream.discoverystream.sections.personalization.inferred.blocked", false);
pref("browser.newtabpage.activity-stream.discoverystream.sections.personalization.inferred.locale-config", "en-US,en-GB,en-CA");
pref("browser.newtabpage.activity-stream.discoverystream.sections.personalization.inferred.position", "1");
pref("browser.newtabpage.activity-stream.discoverystream.sections.personalization.inferred.region-config", "");
pref("browser.newtabpage.activity-stream.feeds.startupcacheinit", true);
pref("browser.newtabpage.activity-stream.mobileDownloadModal.enabled", false);
pref("browser.newtabpage.activity-stream.mobileDownloadModal.variant-a", false);
pref("browser.newtabpage.activity-stream.mobileDownloadModal.variant-b", false);
pref("browser.newtabpage.activity-stream.mobileDownloadModal.variant-c", false);
pref("browser.newtabpage.activity-stream.telemetry.privatePing.enabled", false);
pref("browser.newtabpage.activity-stream.telemetry.surfaceId", "");
pref("browser.tabs.groups.smart.embeddingModelRevision", "latest");
pref("browser.tabs.groups.smart.nearestNeighborThresholdInt", 275);
pref("browser.tabs.groups.smart.suggestOtherTabsMethod", "NEAREST_NEIGHBOR");
pref("browser.tabs.groups.smart.topicModelRevision", "latest");
pref("browser.taskbarTabs.enabled", false);
pref("browser.urlbar.perplexity.hasBeenInSearchMode", false);
pref("browser.urlbar.quicksuggest.dynamicSuggestionTypes", "");
pref("devtools.netmonitor.requestfilter", "");
pref("docshell.shistory.sameDocumentNavigationOverridesLoadType", true);
pref("docshell.shistory.sameDocumentNavigationOverridesLoadType.forceDisable", "");
pref("dom.animations.commit-styles-endpoint-inclusive", false);
pref("dom.element.dialog.request_close.enabled", true);
pref("dom.events.script_execute.enabled", true);
pref("dom.hidden_until_found.enabled", true);
pref("dom.quotaManager.temporaryStorage.updateOriginAccessTime", true);
pref("dom.security.html_serialization_escape_lt_gt", false);
pref("extensions.formautofill.heuristics.refillOnSiteClearingFields", true);
pref("extensions.formautofill.heuristics.refillOnSiteClearingFields.timeout", 500);
pref("javascript.options.experimental.temporal", true);
pref("javascript.options.wasm_unroll_factor", 3);
pref("javascript.options.wasm_unroll_loops", false);
pref("layout.css.grid-multi-pass-track-sizing.enabled", false);
pref("network.http.http3.pr_poll_write", true);
pref("network.proxy.dhcp_wpad_only_one_outstanding", true);
pref("network.proxy.dhcp_wpad_timeout_sec", "5.0");
pref("security.allow_unsafe_dangerous_privileged_evil_eval", false);
pref("toolkit.aboutLogging.uploadProfileToCloud", false);
pref("ui.touch.radius.single_touch.treat_clickable_as_touchable", true);
pref("webgl.porting.strict_readpixels_formats", false);
pref("webgl.porting.strict_readpixels_formats.non_es", false);==REMOVED, RENAMED or HIDDEN
pref("accessibility.typeaheadfind.autostart", true);
pref("app.update.multiSessionInstallLockout.enabled", false);
pref("app.update.multiSessionInstallLockout.timeoutMs", 345600000);
pref("browser.hiddenWindowChromeURL", "chrome://browser/content/hiddenWindowMac.xhtml");
pref("browser.newtabpage.activity-stream.discoverystream.reportContent.enabled", false);
pref("browser.preonboarding.onTrainRolloutPopulation", 0);
pref("browser.theme.colorway-closet", true);
pref("browser.theme.colorway-migration", true);
pref("browser.urlbar.quicksuggest.exposureSuggestionTypes", "");
pref("devtools.webconsole.input.context", true);
pref("dom.element.contenteditable.plaintext-only.enabled", true);
pref("dom.webgpu.indirect-draw.enabled", false);
pref("identity.fxaccounts.toolbar.syncSetup.enabled", false);
pref("intl.tsf.enabled", true);
pref("layout.css.allow-mixed-page-sizes", true);
pref("layout.css.page-orientation.enabled", true);
pref("layout.overflow-underflow.content.enabled", false);
pref("layout.overflow-underflow.content.enabled_in_addons", false);
pref("layout.skip_ticks_while_page_suspended", true);
pref("network.http.http2.allow-push", false);
pref("network.http.http3.max_accumlated_time_ms", 1);
pref("privacy.resistFingerprinting.randomization.canvas.disable_for_chrome", false);
pref("remote.events.async.enabled", true);
pref("security.osclientcerts.assume_rsa_pss_support", true);
pref("svg.discard.enabled", false);
pref("widget.windows.hidden-taskbar-hack.paint", false);
pref("widget.windows.hidden-taskbar-hack.size", false);==CHANGED
pref("browser.newtabpage.activity-stream.newtabShortcuts.refresh", true); // prev: false
pref("browser.newtabpage.activity-stream.support.url", "https://support.mozilla.org/1/firefox/139.0/WINNT/en-US/new-tab"); // prev: "https://support.mozilla.org/1/firefox/138.0/WINNT/en-US/new-tab"
pref("browser.tabs.groups.enabled", true); // prev: false
pref("browser.urlbar.quicksuggest.ampTopPickCharThreshold", 5); // prev: 0
pref("devtools.performance.recording.child.timeout_s", 15); // prev: 0
pref("dom.maxHardwareConcurrency", 128); // prev: 16
pref("dom.selection.mimic_chrome_tostring.enabled", true); // prev: false
pref("dom.workers.timeoutmanager", true); // prev: false
pref("editor.white_space_normalization.blink_compatible", true); // prev: false
pref("layout.css.grid-flex-spanning-items-intrinsic-sizing.enabled", true); // prev: false
pref("layout.css.prefixes.transitions", true); // prev: false
pref("network.cookie.chips.partitionLimitDryRun", false); // prev: true
pref("urlclassifier.trackingAnnotationSkipURLs", ""); // prev: "google.com/recaptcha/,*.google.com/recaptcha/,d3vox9szr7t2nm.cloudfront.net"