Ubuntu standalone does not adhere to its keyboard settings after reboot

[GammaSQ]

Qubes OS release

Qubes OS 4.2

Brief summary

I have an ubuntu-standalone based on a jammy-template. When rebooting, it always consumes keystrokes with the layout it was originally created with (us+colemak+) instead of it's current set layout according to qvm-prefs. Changing the keyboard layout via qvm-prefs actually changes the keyboard-layout inside the standalone VM while it's running, but on a reboot the original keyboard layout is restored.

Steps to reproduce

1. This is a rather old VM, so I'm unsure on the creation process. I am sure I used us+colemak+ at the time, it was a self-compiled image and I don't recall ever having touched the keyboard-settings internally.
2. Change keyboard-layout. I wanted to change the global keyboard layout, which I mention because it caused some hiccups along the way, but the only relevant point seems to be to change the keyboard-layout via qvm-prefs.
3. run setxkbmap -query in the freshly booted VM.

Expected behavior

The VM loads the correct keyboard-layout on startup, i.e. setxkbmap -query reports a layout compatible to what was set in qvm-prefs.

Actual behavior

On VM startup, the old keyboard-layout is loaded. However, changing the layout in qvm-prefs still changes the layout in the VM.

Additional information

I was looking through all keyboard-layout-config files I could find, but that didn't change what setxkbmap -query reported. Changes only appeared in the locale-related commands such as localectl status.

P.S.: running qvm-prefs with the keyboard layout that is already set doesn't do anything. Always change layout to see any effect!