character corruption in report name

[NoNameA 774]

Hello

I'm using GnuCash 2.6.11.
And I use Japanese.
When I set report name to Japanese word, it causes character corruption.

For example, I set report name to "あ",
it's showed "\343\201\202".
This seems octet UTF-8 encoded "あ".

I think this is internationalization bug.
Do you have any information?

thanks.