toCharArray returns different result between Android 4.3 and previous Android SDKs

toCharArray returns different result between Android 4.3 and previous
Android SDKs

The length of toCharArray for the code below is 2 in Android 4.3, and
others return 1., anybody know why?
byte[] SECRET_BYTES = { (byte) 0xfc, (byte) 0xbc};
Log.i("ctf3", "SECRET_BYTES - " + SECRET_BYTES.length);
String txtPwd = new String(SECRET_BYTES, "UTF-8");
char[] charsPwd = txtPwd.toCharArray();
Log.i("ctf3", "length of charsPwd - " + charsPwd.length);