macOS releases are now signed by the Apple notary service, allowing Firefox to properly run on macOS 10.15 Beta releases
Fixed missing Full Screen button when watching videos in full screen mode on HBO GO (bug 1562837)
Fixed a bug causing incorrect messages to appear for some locales when sites try to request the use of the Storage Access API (bug 1558503)
Users in Russian regions may have their default search engine changed (bug 1565315)
Built-in search engines in some locales do not function correctly (bug 1565779)
Available via the internal updater: Help / About Firefox
Windows 10 Pro (64-bit), Panda DOME 18.7.4, MBAM3 Pro, Windows Firewall, OpenDNS Family Shield, SpywareBlaster, MVPS HOSTS file, MBAE Premium, MCShield, WinPatrol PLUS, SAS (on-demand scanner), Zemana AntiLogger Free, Microsoft EDGE, Firefox, Pale Moon, uBlock Origin, CryptoPrevent.
[I believe computer-users who sandbox (Sandboxie) are acting prudently.]