System wide, I am unable to submit an "Intro" Form field If it has only non-English content.

1. If I add a single English char to the content in addition to the Hebrew content, it will pass the validation test.
2. If I add an Image to the content in addition to the Hebrew content, it will pass the validation test.
3. If i chane the the validation method in the Form's code from "Client" to "Server", it will also pass the validation test. (moodle2/course/moodleform_mod.php - function add_intro_editor() )