This is by design.
CuteEditor doesn't use the font tag.
So when you select site dropdown, Cute Editor will render the following HTML code:
<div style="FONT-SIZE: 14pt">Hello World</div>
Instead of <font size="4">Hello World</font>
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx