This is a simple notepad Trick you may not know.
Why does it happen?
As far the Limitations of notepad is concerned any sentence with 4-3-3-5 word combination will result a same value which is not possible by windows OS to detect the changes. Text containing a Unicode UTF-16-encoded unicode are usually made to be started with a Byte order mask denoted by BOM whose job is to inform the reader how the characters inside the document is encoded.
So now what happens here is :