I've just downloaded RStudio 1.3.959 and I would like to set a shortcut to "Ctrl + R, but when I type it, it's set as "Ctrl + □".

It's the same issue with every letters, some are set as "□" others as blank, and for example "Ctrl + h" is set as "Ctrl + backspace" and "Ctrl + m" is set as "Ctrl + enter". It looks like it only affects shortcuts using Ctrl. For example "shift + r" or "alt + r" are working fine.
Any idea on what is going wrong ?
I don't know if it matters but I'm using an AZERTY keyboard.