Added in @Jipok's comment.

src/api/system.c

@@ -106,6 +106,11 @@ static const char *get_key_name(const SDL_Event *e, char *buf) {
     !(e->key.keysym.mod & KMOD_NUM)) {
     return numpad[scancode - SDL_SCANCODE_KP_1];
   } else {
+    /* We need to correctly handle non-standard layouts such as dvorak.
+       Therefore, if a Latin letter(code<128) is pressed in the current layout,
+       then we transmit it as it is. But we also need to support shortcuts in
+       other languages, so for non-Latin characters we pass the scancode that
+       matches the letter in the QWERTY layout. */
     if (e->key.keysym.sym <= 128)
       strcpy(buf, SDL_GetKeyName(e->key.keysym.sym));
     else