Missing text all over the system

[Shock9616]

Hello,

I am new to vanilla Debian but I have some experience with Ubuntu, Alpine Linux, and Raspbian. I just tried installing Debian in a Virtalbox virtual machine on my Mac just to try it out out of interest. I am having an issue with the text not showing up almost system wide. I selected the KDE Plasma desktop environment during installation because I know that I like the way that it looks, and as soon as I logged on, text was missing in notifications and menus and basically everywhere else. Is this a problem with the virtual machine or the desktop environment or something else? I have tried messing around with the font settings in the system preferences app (which it took me forever to find because there was no text) and that does not seem to have helped. It's not the end of the world if I can't fix it since I'm mostly just messing around with it out of interest, but I did spend a fair amount of time on the installation so I would like to fix this if possible.

Thanks in advance!

[Head_on_a_Stick]

Does a plain openbox desktop work as expected? Perhaps you need the guest additions (or whatever they're called).

VirtualBox was removed from Debian's stable release because it's so shit but I think there are packages in the buster-backports repositories.

[Shock9616]

I have installed the guest additions already and that did not fix the problem. I'm just installing openbox now to try and see if it works that way. How would I add these buster-backports repositories and what kinds of packages should I look for in them?

[Shock9616]

Ok so when I try to log in with openbox instead of plasma, the machine just freezes and does nothing on a black screen before showing the desktop. I noticed in the few times that I was logging on that all of the text was there initially but as soon as I started typing in my password it all immediately disappears.