OSX Mavericks: Kotoeri Japanese input method sometimes appears to generate incorrect characters
When you have more than one input method selected in Mavericks, you may see one or more of the following: When Kotoeri and another language are both configured as keyboard input methods, the input source may not use JIS (Japan Industry Standards) keyboard settings as expected. OS X doesn’t accept your screen saver password, even when it seems like you typed the password correctly.