I couldn't write Japanese Kanji when using upfront

When I tried to type Japanese Kanji, I couldn't type any Kanji correctly. In case I tried to copy and paste Kanji on up front(ex: type Kanji in apples' s memo,and copy the text and paste it in the upfront text editor), it worked. However, when I typed texts directly in the upfront text editor, I couldn't write any Kanji.
I think this is a bug. So, I hope the next update will fix this.