askvortsov Here is a little record for both of the issues.

My ⌨️ layout specs:
$ setxkbmap -query
rules: evdev
model: pc105
layout: fr
variant: latin9
I'm gonna try to reproduce on windows, as I'm on archlinux.
EDIT half-good news: I can't reproduce on windows, so I guess it's something with my linux keyboard layout. I'll try to test with another french keyboard layout