[FW13, fedora 40, Azerty] Ctrl+Alt shadows AltGr

Which Linux distro are you using? Fedora 40

Which kernel are you using? 6.12.9-100.fc40.x86_64

Which BIOS version are you using? SMBIOS 3.6.0

Which Framework Laptop 13 model are you using? AMD Ryzen™ 7040

Hi!
I’m using a French AZERTY keyboard, and all keys work. However, when pressing Ctrl+Alt, the right Alt (AltGr) is ignored which I confirmed using evtest.

Yet, in need to be able to type Ctrl+Alt+\, where the backslash is obtained as AltGr+8, therefore I need Ctrl+Alt+AltGr+8 to be understood as Ctrl+Alt+\, which is not the case.
Most of online topics are the reverse question, where people want Ctrl+Alt to serve as AltGr, which is not my usecase, or offer Xorg solutions (and I’m on Wayland).
In the keyboard settings, the Alternate Characters Keys is set as Right Alt and in Gnome Tweaks, the Key to choose the 3rd level is also set as Right Alt.

Is it a linux issue or does it comes from the hardware ?
Thank you for any help or lead on the case!
Best
Clément

Results of commands:

$ localectl
System Locale: LANG=en_US.UTF-8
    VC Keymap: fr
   X11 Layout: fr
    X11 Model: pc105
  X11 Options: lv3:ralt_switch