Things wrong with FosWiki WYSIWYG editor

http://foswiki.org/ (Not FossWiki)

• Sometimes this invisible string appears at the bottom of the document, and you can't add anything more in WYSIWYG mode, until you go into Wiki Text mode and delete it: \x{feff}\x{feff}\x{feff}
• When an empty bullet point is at the end of a list, it often gets stuck there and cannot be removed in WYSIWYG mode.
• Often, pressing enter in part of the document in WYSIWYG mode causes the focus to jump up to the start of the document, and the enter is put in there, instead of where the cursor was.