No, it doesn't switch while I'm typing. It switches when I go between windows. But my main problem is I'm not able to type in Japanese. Like, even if the language bar is in Japanese, it doesn't give me the buttons to type in Japanese and do the conversions from like hiragana to kanji and stuff. I have extra buttons on, so it's not that, even though I think that's supposed to get the buttons like "input mode" to show up. If I turn it off the language bar goes invisible.