File link does not work well in cas of Japanese file name

Dear Sirs;
I am beginner user of Scrivener. It is very convenient not only to write sentences but also to manage many files by using file link. I usually make the file link from explorer to Scrivener window by drag and drop. It works well before closing of Scrivener even if linked file name includes Japanese character. But, after closing Scrivener and start again it, I can not open linked file by clicking linked file name (It shown in blue with under line which is the same as I made it.)
I guess it caused by multibyte character in file name.
If I never use Japanese character in the file name, it works fine.
But, it is inconvenient for Japanese.
Please kindly let me know how to solve this.
Thanks in advance.