frJericho,

I am very sorry to delay your request so long.

As we researched this issue,

The problem is that the server side remove word logic is not same as client side.

Our plan is copying the javascript logic to C# , for both CuteEditor and RichTextEditor, 

Recently we fixed tons of CuteEditor6.6 bugs , and we will release a new update for CuteEditor6.6 soon.

Regards,
Terry