After most recent Minecraft launcher update; Ubuntu 1804 machine will not connect to Minecraft servers.

Failed to connect to the server

Failed to login:  The authentication servers are currently down for maintenance.

Tested the following:  (all able to connect to the server)

Ubuntu 1804 on a different machine:  Works

Ubuntu 1804 on a VM on the affected machine:  Works

Windows 8.1 Pro:  Works

Windows 10 Pro:  Works

Mac High Sierra:  Works

Ubuntu 1604 crouton on Chromebox:  Works

On affected machine:  (firewall is disabled)

Reinstalled via SNAP:  Error - Failed to connect to the server

Installed via Minecraft.deb:  Error - Failed to connect to the server

Extracted and ran Minecraft.tar.gz:  Error - Failed to connect to the server

Used older Minecraft.jar:  Error - Failed to connect to the server