That's a bummer!
I think you can workaround it !?
If you start the terminal on your ubuntu session on WSL:
1. See your current settings typing:
2. See the supported layouts you have available:
Code:
localectl list-x11-keymap-layouts
3. Set the layout to one of the supported languages:
Code:
localectl set-x11-keymap $LAYOUT
Hopefully you'll never need to tweak it again if you're fine with a single key layout on your WSL apps.
Since you also have a proper ubuntu installation on a proper VM you could try compare the output of those commands between WSL and the real thing.