Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Firefox regressions (USN-4546-2)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4546-2 advisory. USN-4546-1 fixed vulnerabilities in Firefox. The update introduced various minor regressions. This update fixes the problem. We apologize...