Sorry but it’s not the first time I try to bring attention on that matter :
in most AZERTY french keyboards [ ` ] won’t sit above [ Tab ].
Features using keyboard shortcuts using [ Alt + Tab ] and [ Alt + above Tab ] should relate to the position of the key on keyboard ( second row, first column ) and not on the « symbol / letter » on the key ( as ², ` or ¬ won’t have the same position depending on language ).
It’s not so important for other keyboard shortcuts, but for these ones position are their strength.
If it can’t be mapped to position of the key above tab, then user must have the ability to change it :
if [ Alt + ` ] is hard coded, on a french keyboard it should become [ Alt + ² ].