Medium Android application has a big bug on two bytes code like Japanese input.

You can not write paragraph. It just goes one paragraph without break.

In English like this, you can write paragraph with break space.

日本語では、新しいパラグラフを書き出させない。リターンキーを押しても新しいパラグラフを書き出せない。

In Japanese you can not start with a new paragraph by hitting a return key.