Japanese input is not supported.

When typeing text in Japanese with English keyboards, users must use some Input Method software. It converts a combination of one, two or three alphabets into one Japanese character.
But in this App, Input Methods are disabled. So when I tried to input text in Japanese, only vowels can be inputted in the App, because a Japanese consonant is inputted by two alphabets.
If the developpers are planning to support Japanese (and maybe Korean and Chinese have similar problems), Supporting InputMethodKitFramework will help.

まう2 about Rough Draft, v1.5.2