It's Eset NOD32 Antivirius 4, Business Edition, version 4.0.85.
From Eset page I could download only 4.0.87 which was crashing Webbrowsers, I didn't find 4.0.90.
Hello, could you please check also issue with "man" command on Ubuntu 18.04 ?
~$ man cp
error[0f240000]: Cannot connect to /tmp/esets.sock: Permission denied
error[0f2e0000]: Cannot connect to /tmp/esets.sock: Permission denied
With esets daemon stopped - manual opens without any issues.