Right-Alt key issue on non-english Windows systems

[aaaaaaaCatOnMyKeyboard]

I'm not sure if this is already known, but applications which use SDL for keyboard inputs on non-english Windows systems, cannot properly handle the Right-Alt key and recognise it as the key combination Left-Ctrl + Right-Alt.
The reason for this, is that the Ctrl-Alt key on a US keyboard sends the same scancode as the Right-Alt (AltGr) key on non-english systems.
I've observed this for the first time in DOSBox-X and mentioned it here:
joncampbell123/dosbox-x#915

some further investigations shows, that DOSBox + forks and other applications like RetroArch for example share the same problem.
Is there a chance for a fix?

[gil938271]

yeah it is not solved. mouse works but the keyboard does not it doesn't even show an error. i have a xiaomi phone and the "latest" win10 is that an issue? it seen to be a gboard problem i had the same issue when this feature was on Linux only feature. Samsung keyboard worked gboard didn't