This is a development, bugfix and security release. Please note that Google Widevine DRM might currently not work in new installations due to Google's licensing model.
Removed unused code: contextual identity, crash reporter leftovers, SecurityUI telemetry, "enhanced" new tab tiles.
Updated the installer and internal updater.
Removed all Firefox Accounts code and replaced the Sync client for compatibility.
Implemented JavaScript parser improvements and the TC39 toString() revision proposal for web compatibility.
Improved handling of url() tokens in CSS to better handle incorrect syntax.
Updated the embedded emoji font for broader emoji coverage.
Fixed print failure for some web pages.
Fixed Linux XRender performance issues over remote connections (e.g. X2Go).
Improved JavaScript engine performance: dead compartment collection,
Fixed an address bar focus issue in Private Browsing mode.
Improved rendering performance for certain websites (with complex event regions).
Implemented several ECMAScript 2019 features (String trimStart/trimEnd, Array flat/flatMap, Symbol description)
Fixed security issues: CVE-2019-7317, CVE-2019-11701, CVE-2019-11698, CVE-2019-9817 (DiD), CVE-2019-11700, CVE-2019-11696 and CVE-2019-11693.
Fixed several memory safety hazards and crashes. |
