Found the problem LC_CTYPE=ja_JP.UTF-8 fixes the input.
Requested solution: The English UI package should not rewrite LC_CTYPE environment variable. LC_CTYPE should be linked only to the keyboards/layouts/inputs installed, not to the UI language.
Found the problem LC_CTYPE=ja_JP.UTF-8 fixes the input.
Requested solution: The English UI package should not rewrite LC_CTYPE environment variable. LC_CTYPE should be linked only to the keyboards/layouts/inputs installed, not to the UI language.