Whonix installed from Whonix-XFCE-16.0.5.3.ova
First run of Whonix Gateway
First system update
sudo apt update randomly segfaults
Whonix for VirtualBox?
Probably outdated VirtualBox host software. Probably this, see:
Linux Host Kernel versus Tor Browser and other Crashes
(Whonix is based on Kicksecure.)