this is one of those 'facts' that i was always suspicious of.   

I've reinstalled EndeavourOS in VBox with the LXQt desktop. I have installed one package (Google Chrome) from the AUR. I'll see how it goes over the next few days.

Cool, enjoy

I haven't had trouble with EndeavourOS when installed on the rails. I have had trouble with Arch, Manjaro and now EndeavourOS in VBox. Maybe I'm just unlucky or choose the wrong mirrors. 

After my glitch with EndeavourOS, I have now installed MX-Linux in Vbox. It works very well, with the Guest Additions giving a full screen. I'll update as needed and see if I have any issues. Since MX is Debian-based and uses apt, if I have trouble, it'll be because of Vbox itself, I think.