virtualbox – Garbled text in GUI

This is what I see in some places on my Ubuntu 22.04 with Wayland and GNOME in a VirtualBox VM:

It’s particularly bad in VS Code: the dialog window (which is supposed to be about settings sync) and the main window’s title bar are totally garbled.

What causes this? And how to fix it?

EDIT: It’s not just a problem with VS Code. This window’s title should (probably) say “Report a problem…”. There are two of them, both garbled (after waking the host system up from sleep; it’s another problem, happens often, and no details are given, just a suggestion to report the problem, which one of the buttons does). There was a third one, not garbled. And windows like this (“Report a problem…”) used to not be garbled, this is the first time.

EDIT: I’ll paste the other one as well. It’s slightly different. Has something in the title bar.