In order not to display my email address on my webpage, I am instead doing it using ASCII codes. For example like the ones you get at http://digitalcolony.com/lab/maskemail/maskemailascii.aspx .
No problem occur as long as I stick with the HTML-editor, then the code is saved as ASCII-encoded.
However, if I enter this code in the HTML-editor of WP, then switch to the WYSIWYG-editor and again back to HTML-editor the code has been transformed to normal letters. It is no longer encoded. Thus WP isn't saving the code as it is written but as it looks.
To me this seems like a bug, isn't it?