Depending upon the content (activity or resource) type, Japanese characters (and special characters entered with the WYSIWYG editor) are stripped out. Anything past the special characters are also deleted.

So basically, between the form and the database, all special characters (and non english ones) get filtered out from the point of the first character.

I checked:

The database collation: it is in UTF8_GENERAL_CI.
I tried using text input instead of the WYSIWYG - same problem.

If I enter Japanese directly into the database, it is displayed in MYPHPADMIN. However, as soon as I edit it, the Japanese disappears.

Tested on: Firefox, IE6, and Chrome.

This bug occurs in labels, web pages, and text pages, but not in forums or wikis (forums and wikis are fully multilingual).