Thanks… after investigation…
I try to add hotkey in a fresh install of directory Opus.
This problem appears only with hotkey not when I assign hotkey to button in toolbar.
I think there is problem why qwerty keyboard but with azerty…
yes i assign & and é because in azerty keyboard if i want to assign hotkey to 1 (not numpad) in need to press shift + & !!!
in qwerty you have 1, 2... and shift+1 = !, shift+2 = @...
Problem appear with all this keys (and combinaison shift and alt)...