I'm seeing the same problem in Firefox.  I enter edit mode in my application in which cute editor is displayed.  I update my content.  I then save it.  I go back into edit mode with cute editor displayed and I can't backspace to delete text in the textarea of CuteEditor. 

 

However, I discovered that if I type something first, any character, then it unfreezes and I can add and delete text at will and the changes all take effect.

 

Any idea what's going on?