Can't set "Start date" and "Release date" in a version when using Japanese

Summary

Can't set "Start date" and "Release date" in a version when using Japanese.
I couldn't reproduce this problem with any other language even if the language contains multi-byte characters (like Korean, French).

Steps to Reproduce

1. Set your language to Japanese in User Profile
2. Go to プロジェクト管理 > バージョン page (Project setting > Versions page)
3. Put a version name and click a calendar button
4. Select a date in a dialog
   

Expected Results

We can set "Start date" and "Release date" correctly.

Actual Results

The following error was shown.

Notes

• As I mentioned above, this problem doesn't occur with other languages than Japanese
• Even if I set the date manually (put the date in "d/MMM/yy" format), the error persists
• I could also reproduce this problem on Board > Release page
• It seems to be similar to JRA-61665 but different problem

Workaround

Change user's language to English and set the dates and turn the language back to the original one.