It is a bug in LSAPI code, if you build your own PHP binary, you can fix it by changing two line of code at beginning of "lsapilib.c".
search for "HTTP_ACCEPT_LANG", change it to "HTTP_ACCEPT_LANGUAGE", then serch "11, 19, 20, 16,", change "16" to "20", then rebuild your lsphp binary.
If you...