form is only in English cannot type in Japanese character text in the idea or details fields. Merged

My product supports multiple languages and presents content based on the browser language setting. But when my customers go to submit an idea using the Aha! idea link in my product's UI the form is in English and if my language is Japanese the form does not let me enter Japanese character text in the idea or details fields.

Not supporting Japanese character text in the idea or details fields is a problem because we are a Japanese company.